Location: The junction of the A414 and the A1M .
Due to: Congestion.
Normal traffic conditions are expected between 20:30 and 20:45 on 14 March 2026.
Nearest town: 11.13 miles from Round Green.
Location: The junction of the A414 and the A1M .
Due to: Congestion.
Normal traffic conditions are expected between 19:00 and 19:15 on 14 March 2026.
Nearest town: 11.13 miles from Round Green.
Location: southbound between the junctions with the A4146 South and the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 18:00 and 18:15 on 14 March 2026.
Delay : There are currently delays of 10 minutes against expected traffic.
Nearest town: 7.97 miles from Round Green.
Location: southbound between the junctions with the A4146 South and the A4012 .
Due to: Congestion.
Normal traffic conditions are expected between 16:45 and 17:00 on 14 March 2026.
Nearest town: 7.97 miles from Round Green.
Location: northbound between the A603 and the junction with the A421 .
Due to: Roadworks.
Period : from 03:42 on 14 March 2026 to 21:00 on 14 March 2026.
Lanes Closed : All lanes are closed.
Nearest town: 19.38 miles from Round Green.
Location: The A1M northbound between junctions J6 and J7 .
Due to: Roadworks scheme.
Period : from 21:03 on 13 March 2026 to 05:00 on 21 March 2026.
Nearest town: 9.65 miles from Round Green.
Location: clockwise at junction J23 (Hatfield) .
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 15 March 2026.
Lanes Closed : All lanes are closed.
Nearest town: 15.68 miles from Round Green.
Location: clockwise between junctions J22 (St Albans) and J23 (Hatfield) .
Lane Closures : The hard shoulder, lanes 1, 2 and 3 are closed.
Due to: Emergency barrier repairs.
Period : expect disruption until 06:00 on 15 March 2026.
Lanes Closed : There are three of four lanes closed.
Nearest town: 13.92 miles from Round Green.
Location: anticlockwise between junctions J25 (Enfield) and J24 (Potters Bar) .
Lane Closures : Lanes 1, 2 and 3 are closed.
Due to: Emergency roadworks.
Period : expect disruption until 05:00 on 15 March 2026.
Lanes Closed : There are three of four lanes closed.
Nearest town: 18.12 miles from Round Green.
Location: northbound between junctions J9 (Dunstable A5) and J11A .
Due to: Roadside Equipment Maintenance.
Period : from 15:26 on 4 March 2026 to 05:00 on 19 March 2026.
Nearest town: 4.89 miles from Round Green.
Location: The A1M northbound exit slip at junction J9 .
Due to: Roadworks scheme.
Period : from 21:00 on 11 March 2026 to 05:00 on 17 March 2026.
Nearest town: 9.6 miles from Round Green.
Location: The A1M southbound between junctions J9 and J6 .
Due to: Roadworks scheme.
Period : from 21:02 on 9 March 2026 to 05:00 on 18 March 2026.
Nearest town: 10.66 miles from Round Green.
Location: northbound between junctions J12 (Flitwick) and J13 (Milton Keynes) .
Lane Closures : Lane three is closed.
Due to: Emergency roadworks.
Period : from 13:42 on 21 February 2026 to 12:00 on 24 March 2026.
Lanes Closed : There is one of four lanes closed.
Nearest town: 9.18 miles from Round Green.
Location: southbound between junctions J13 (Milton Keynes) and J12 (Flitwick) .
Lane Closures : Lane three is closed.
Due to: Emergency roadworks.
Period : from 13:35 on 21 February 2026 to 12:00 on 24 March 2026.
Lanes Closed : There is one of four lanes closed.
Nearest town: 11.42 miles from Round Green.
Location: northbound between the M1 and the junction with the A4280 .
Due to: Roadworks scheme.
Period : from 20:00 on 13 March 2026 to 06:00 on 24 March 2026.
Nearest town: 14.82 miles from Round Green.
Location: northbound.
Due to: Roadworks scheme.
Period : from 04:00 on 14 March 2026 to 21:00 on 28 March 2026.
Nearest town: 19.33 miles from Round Green.
Location: The A1M southbound between junctions J8 and J7 .
Lane Closures : The hard shoulder is closed.
Due to: Bridge repairs.
Period : expect disruption until 21:00 on 8 October 2026.
Nearest town: 8.83 miles from Round Green.
Location: The A1M northbound between junctions J7 and J8 .
Lane Closures : The hard shoulder is closed.
Due to: Bridge repairs.
Period : expect disruption until 21:00 on 8 October 2026.
Nearest town: 8.64 miles from Round Green.
Location: anticlockwise between junctions J22 (St Albans) and J21A (Watword) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 12.83 miles from Round Green.
Location: The A1M northbound between junctions J5 and J6 .
Due to: Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 10.19 miles from Round Green.
Location: The A1M northbound between junctions J3 and J4 .
Lane Closures : Lane three will be closed.
Due to: Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 11.52 miles from Round Green.
Location: The A1M northbound at junction J4 .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.17 miles from Round Green.
Location: The A1M northbound between junctions J4 and J5 .
Due to: Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.08 miles from Round Green.
Location: The A1M northbound exit slip at junction J6 .
Due to: Road marking works are planned.
Status : Pending.
Schedule : From 23:00 on 20 March 2026 to 05:30 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 9.74 miles from Round Green.
Location: northbound at junction J11A .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 3.74 miles from Round Green.
Location: northbound between junctions J11 (Luton) and J11A .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 3.09 miles from Round Green.
Location: clockwise between junctions J24 (Potters Bar) and J25 (Enfield) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:30 on 17 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 19.75 miles from Round Green.
Location: The A1M northbound between junctions J6 and J7 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 9.5 miles from Round Green.
Location: clockwise at junction J20 (Hemel Hstead) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 20:00 on 17 March 2026 to 05:30 on 18 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 13.22 miles from Round Green.
Location: southbound between junctions J8 (Hemel Hstead) and J6 (Watford A405) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:30 on 20 March 2026.
Schedule : From 23:00 on 20 March 2026 to 06:00 on 21 March 2026.
Schedule : From 22:00 on 23 March 2026 to 05:30 on 24 March 2026.
Schedule : From 22:00 on 26 March 2026 to 05:30 on 27 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 9.64 miles from Round Green.
Location: southbound between junctions J6A (St Albans) and J6 (Watford A405) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:30 on 20 March 2026.
Schedule : From 23:00 on 20 March 2026 to 06:00 on 21 March 2026.
Schedule : From 22:00 on 23 March 2026 to 05:30 on 24 March 2026.
Schedule : From 22:00 on 26 March 2026 to 05:30 on 27 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 11.3 miles from Round Green.
Location: clockwise between junctions J16 (M40) and J17 (Maple Cross) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:30 on 20 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 18.47 miles from Round Green.
Location: clockwise at junction J17 (Maple Cross) .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Emergency roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:30 on 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.85 miles from Round Green.
Location: anticlockwise between junctions J23 (Hatfield) and J22 (St Albans) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:30 on 18 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 14.18 miles from Round Green.
Location: northbound entry slip from the A6 Bedford south.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.53 miles from Round Green.
Location: southbound between the A600 and the junction with the A6 Bedford south.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16 miles from Round Green.
Location: southbound exit slip to the A6 Bedford south.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 25 March 2026.
Schedule : From 20:00 on 28 March 2026 to 06:00 on 29 March 2026.
Schedule : From 20:00 on 29 March 2026 to 06:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.51 miles from Round Green.
Location: southbound between the A6 Bedford central and the junction with the M1 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 25 March 2026.
Schedule : From 20:00 on 28 March 2026 to 06:00 on 29 March 2026.
Schedule : From 20:00 on 29 March 2026 to 06:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.49 miles from Round Green.
Location: northbound entry slip from the A6 Bedford central.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.56 miles from Round Green.
Location: northbound exit slip to the A6 Bedford central.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.49 miles from Round Green.
Location: northbound between the M1 and the junction with the A4280 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.25 miles from Round Green.
Location: southbound exit slip to the A6 Bedford central.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.57 miles from Round Green.
Location: southbound between the junctions with the A603 and the A6 Bedford central.
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 25 March 2026.
Schedule : From 20:00 on 28 March 2026 to 06:00 on 29 March 2026.
Schedule : From 20:00 on 29 March 2026 to 06:00 on 30 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.84 miles from Round Green.
Location: northbound entry slip from the A603 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.5 miles from Round Green.
Location: northbound exit slip to the A603 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.25 miles from Round Green.
Location: northbound exit slip to the A600 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.97 miles from Round Green.
Location: southbound between the junctions with the A4280 and the A603 .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 17.31 miles from Round Green.
Location: northbound between the A6 Bedford central and the junction with the A603 .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.77 miles from Round Green.
Location: southbound between the A4280 and the junction with the A603 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.73 miles from Round Green.
Location: southbound exit slip to the A603 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.64 miles from Round Green.
Location: southbound between the A603 and the junction with the A6 Bedford central.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 23 March 2026 to 25 March 2026.
Schedule : From 20:00 on 28 March 2026 to 06:00 on 29 March 2026.
Schedule : From 20:00 on 29 March 2026 to 06:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 15.59 miles from Round Green.
Location: southbound between the A603 and the junction with the A600 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 21 March 2026 to 23 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.43 miles from Round Green.
Location: northbound exit slip to the A4280 .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.19 miles from Round Green.
Location: southbound exit slip to the A4280 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.59 miles from Round Green.
Location: southbound between the A1 and the junction with the A4280 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 19.27 miles from Round Green.
Location: northbound between the A600 and the junction with the A4280 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 March 2026 to 21 March 2026.
Schedule : From 20:00 on 23 March 2026 to 06:00 on 24 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.19 miles from Round Green.
Location: northbound between the junctions with the M1 and the A6 Bedford south.
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.21 miles from Round Green.
Location: southbound between junctions J14 (Milton Keynes) and J13 (Milton Keynes) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Emergency roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 15.38 miles from Round Green.
Location: southbound between junctions J9 (Dunstable A5) and J8 (Hemel Hstead) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 21 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 4.66 miles from Round Green.
Location: southbound between junctions J13 (Milton Keynes) and J12 (Flitwick) .
Lane Closures : Lane three will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 19 March 2026 to 21 March 2026.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 26 March 2026 to 28 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 11.04 miles from Round Green.
Location: northbound between junctions J9 (Dunstable A5) and J10 (Luton Airport) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 09:30 on 19 March 2026 to 15:30 on 19 March 2026.
Nearest town: 4.39 miles from Round Green.
Location: northbound between junctions J9 (Dunstable A5) and J10 (Luton Airport) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 09:30 on 19 March 2026 to 15:30 on 19 March 2026.
Nearest town: 3.49 miles from Round Green.
Location: northbound between junctions J1 (North Circular) and J5 (Harrow A41) .
Lane Closures : Lane three will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:30 on 19 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 18.13 miles from Round Green.
Location: clockwise between junctions J16 (M40) and J17 (Maple Cross) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:30 on 19 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 19.44 miles from Round Green.
Location: southbound between the junctions with the A603 and the A6001 Biggleswade North.
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 18 March 2026 to 21 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.65 miles from Round Green.
Location: northbound between the junctions with the A6001 Biggleswade South and the A6001 Biggleswade North.
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 18 March 2026 to 21 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.33 miles from Round Green.
Location: The A1M northbound between junctions J6 and J7 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 9.49 miles from Round Green.
Location: The A1M northbound between junctions J6 and J7 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 17 March 2026 to 21 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 9.65 miles from Round Green.
Location: northbound between the junctions with the A603 and the A4280 .
Lane Closures : Lane two will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 29 March 2026 to 05:00 on 30 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 17.91 miles from Round Green.
Location: northbound between the A603 and the junction with the A421 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 29 March 2026 to 05:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.28 miles from Round Green.
Location: northbound between the A4280 and the junction with the A1 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 29 March 2026 to 05:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.45 miles from Round Green.
Location: northbound between the A603 and the junction with the A4280 .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 29 March 2026 to 05:00 on 30 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.13 miles from Round Green.
Location: northbound between the A603 and the junction with the A421 .
Lane Closures : Lane two will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 21:00 on 29 March 2026 to 05:00 on 30 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.13 miles from Round Green.
Location: southbound between junctions J12 (Flitwick) and J11A .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 6.94 miles from Round Green.
Location: southbound entry slip at junction J12 (Flitwick) .
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 6.58 miles from Round Green.
Location: clockwise between junctions J16 (M40) and J18 (Rickmansworth) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:30 on 18 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 18.34 miles from Round Green.
Location: clockwise entry slip at junction J17 (Maple Cross) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:30 on 18 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.59 miles from Round Green.
Location: southbound between junctions J13 (Milton Keynes) and J12 (Flitwick) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 7.69 miles from Round Green.
Location: northbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 13.79 miles from Round Green.
Location: anticlockwise exit slip at junction J23 (Hatfield) .
Lane Closures : Lane one will be closed.
Due to: Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:30 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.21 miles from Round Green.
Location: southbound between junctions J9 (Dunstable A5) and J8 (Hemel Hstead) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 09:30 on 17 March 2026 to 15:30 on 17 March 2026.
Nearest town: 7.93 miles from Round Green.
Location: southbound between junctions J10 (Luton Airport) and J9 (Dunstable A5) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 09:30 on 17 March 2026 to 15:30 on 17 March 2026.
Nearest town: 3.99 miles from Round Green.
Location: southbound exit slip at junction J9 (Dunstable A5) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 09:30 on 17 March 2026 to 15:30 on 17 March 2026.
Nearest town: 4.3 miles from Round Green.
Location: southbound between junctions J12 (Flitwick) and J11A .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 4.95 miles from Round Green.
Location: southbound entry slip at junction J5 (Harrow A41) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 14.96 miles from Round Green.
Location: southbound between junctions J6 (Watford A405) and J5 (Harrow A41) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 13.93 miles from Round Green.
Location: northbound at junction J11 (Luton) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 2.24 miles from Round Green.
Location: northbound between junctions J10 (Luton Airport) and J11 (Luton) .
Lane Closures : Lane one will be closed.
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 1.75 miles from Round Green.
Location: northbound exit slip at junction J11 (Luton) .
Due to: Barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 2.24 miles from Round Green.
Location: southbound exit slip at junction J4 (Edgware A41) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.89 miles from Round Green.
Location: southbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.55 miles from Round Green.
Location: southbound between junctions J5 (Harrow A41) and J1 (North Circular) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 14.81 miles from Round Green.
Location: southbound exit slip at London Gateway Services.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:30 from 16 March 2026 to 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 18.34 miles from Round Green.
Location: The A1M northbound between junctions J8 and J9 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 16 March 2026 to 21 March 2026.
Nearest town: 9.14 miles from Round Green.
Location: The A1M southbound between junctions J9 and J8 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 16 March 2026 to 21 March 2026.
Nearest town: 9.51 miles from Round Green.
Location: northbound between junctions J13 (Milton Keynes) and J14 (Milton Keynes) .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 16 March 2026 to 18 March 2026.
Schedule : From 21:00 on 20 March 2026 to 05:00 on 21 March 2026.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 23 March 2026 to 28 March 2026.
Lanes Closed : There will be one of four lanes closed.
Nearest town: 15.91 miles from Round Green.
Location: northbound between the junctions with the A4146 Bletchley South and the A4146 Bletchley North.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.18 miles from Round Green.
Location: northbound between the A421 and the junction with the A509 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 18 March 2026 to 06:00 on 19 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.26 miles from Round Green.
Location: southbound between the A4146 North and the junction with the A4012 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.44 miles from Round Green.
Location: northbound between the A4012 and the junction with the A4146 Bletchley South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 16 March 2026 to 06:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12.16 miles from Round Green.
Location: southbound between the A421 and the junction with the A4146 South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 17 March 2026 to 06:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.93 miles from Round Green.
Location: northbound between the A509 and the junction with the A508 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 19 March 2026 to 06:00 on 20 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.79 miles from Round Green.
Location: southbound between the A421 and the junction with the A4146 South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 17 March 2026 to 06:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 16.26 miles from Round Green.
Location: southbound between the A509 and the junction with the A421 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 20:00 on 18 March 2026 to 06:00 on 19 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.72 miles from Round Green.
Location: southbound between junctions J5 (Harrow A41) and J1 (North Circular) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 09:30 and 16:00 from 16 March 2026 to 18 March 2026.
Nearest town: 15.82 miles from Round Green.
Location: clockwise exit slip at junction J21 (M1) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.85 miles from Round Green.
Location: clockwise between junctions J20 (Hemel Hstead) and J21A (Watword) .
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.82 miles from Round Green.
Location: southbound between junctions J8 (Hemel Hstead) and J6 (Watford A405) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : There will be two of four lanes closed.
Nearest town: 10.48 miles from Round Green.
Location: northbound between junctions J5 (Harrow A41) and J6A (St Albans) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 13.27 miles from Round Green.
Location: southbound between junctions J6A (St Albans) and J6 (Watford A405) .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 11.3 miles from Round Green.
Location: clockwise at junction J20 (Hemel Hstead) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 13.22 miles from Round Green.
Location: clockwise between junctions J19 (Watford) and J20 (Hemel Hstead) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:30 on 15 March 2026 to 05:30 on 16 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 14.1 miles from Round Green.
Location: northbound between the junctions with the A6001 Biggleswade South and the A6001 Biggleswade North.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.82 miles from Round Green.
Location: northbound at the junction with the A6001 Biggleswade South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 14.8 miles from Round Green.
Location: northbound between the junctions with the A507 and the A6001 Biggleswade South .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.57 miles from Round Green.
Location: southbound between the junctions with the A6001 Biggleswade South and the A507 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 14.84 miles from Round Green.
Location: southbound at the junction with the A6001 Biggleswade South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 14.84 miles from Round Green.
Location: southbound between the junctions with the A6001 Biggleswade North and the A6001 Biggleswade South.
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 15.18 miles from Round Green.
Location: northbound between the junctions with the A507 and the A6001 Biggleswade South .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12.72 miles from Round Green.
Location: southbound between the junctions with the A6001 Biggleswade South and the A507 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 13.27 miles from Round Green.
Location: The A1M southbound at junction J10 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12.73 miles from Round Green.
Location: The A1M northbound at junction J10 .
Lane Closures : Lane two will be closed.
Due to: Horticultural works are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 12.6 miles from Round Green.
Location: northbound between junctions J11A and J14 (Milton Keynes) .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:00 on 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.3 miles from Round Green.
Location: northbound between junctions J9 (Dunstable A5) and J11A .
Lane Closures : Lanes 1, 2, 3, 4 and 5 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.56 miles from Round Green.
Location: southbound exit slip at junction J12 (Flitwick) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 6.94 miles from Round Green.
Location: southbound exit slip at junction J13 (Milton Keynes) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.88 miles from Round Green.
Location: southbound entry slip at junction J12 (Flitwick) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 6.58 miles from Round Green.
Location: northbound between junctions J8 (Hemel Hstead) and J9 (Dunstable A5) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 6.01 miles from Round Green.
Location: northbound entry slip at junction J9 (Dunstable A5) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.54 miles from Round Green.
Location: northbound entry slip at junction J11 (Luton) .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 2.31 miles from Round Green.
Location: southbound entry slip at junction J14 (Milton Keynes) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 16.95 miles from Round Green.
Location: southbound between junctions J15 (Northampton) and J14 (Milton Keynes) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 18.04 miles from Round Green.
Location: northbound exit slip at junction J10 (Luton Airport) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 2.42 miles from Round Green.
Location: northbound exit slip at junction J11 (Luton) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 2.24 miles from Round Green.
Location: northbound between junctions J11 (Luton) and J11A .
Lane Closures : Lanes 2 and 3 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:00 on 20 March 2026.
Lanes Closed : There will be two of three lanes closed.
Nearest town: 2.99 miles from Round Green.
Location: southbound between the junctions with the A5183 and the M1 .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 19 March 2026 to 05:00 on 20 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 4.32 miles from Round Green.
Location: northbound exit slip at junction J11A .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 18 March 2026 to 05:00 on 19 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 3.74 miles from Round Green.
Location: southbound exit slip at junction J11A .
Lane Closures : Lane one will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 4.28 miles from Round Green.
Location: southbound between junctions J14 (Milton Keynes) and J11A .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 17.25 miles from Round Green.
Location: southbound between junctions J12 (Flitwick) and J11A .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 21 March 2026 to 05:00 on 22 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 4.85 miles from Round Green.
Location: southbound entry slip at Toddington Services.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 5.53 miles from Round Green.
Location: southbound exit slip at Toddington Services.
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 5.72 miles from Round Green.
Location: southbound entry slip at junction J13 (Milton Keynes) .
Due to: Roadside equipment maintenance is planned.
Status : Pending.
Schedule : From 22:00 on 20 March 2026 to 05:00 on 21 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.54 miles from Round Green.
Location: The A1M southbound at junction J9 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 10.66 miles from Round Green.
Location: The A1M southbound between junctions J9 and J8 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of three lanes closed.
Nearest town: 10.21 miles from Round Green.
Location: The A1M southbound at junction J8 .
Lane Closures : Lane one will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 17 March 2026 to 05:00 on 18 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 9.13 miles from Round Green.
Location: northbound.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 23 March 2026 to 25 March 2026.
Schedule : From 21:00 on 26 March 2026 to 05:00 on 27 March 2026.
Schedule : From 21:00 on 27 March 2026 to 21:00 on 28 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.33 miles from Round Green.
Location: northbound between the junctions with the A603 and the A421 .
Lane Closures : Lane two will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 23 March 2026 to 25 March 2026.
Schedule : From 21:00 on 26 March 2026 to 05:00 on 27 March 2026.
Schedule : From 21:00 on 27 March 2026 to 21:00 on 28 March 2026.
Lanes Closed : There will be one of two lanes closed.
Nearest town: 18.87 miles from Round Green.
Location: northbound between the junctions with the A603 and the A421 .
Due to: Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 05:00 from 23 March 2026 to 25 March 2026.
Schedule : From 21:00 on 26 March 2026 to 05:00 on 27 March 2026.
Schedule : From 21:00 on 27 March 2026 to 21:00 on 28 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 19.28 miles from Round Green.
Location: The A1M northbound exit slip at junction J9 .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Roadworks are planned.
Status : Pending.
Schedule : From 21:00 on 16 March 2026 to 05:00 on 17 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 10.28 miles from Round Green.
Location: northbound between junctions J6 (Watford A405) and J8 (Hemel Hstead) .
Lane Closures : Lane one will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : From 22:00 on 13 March 2026 to 05:00 on 14 March 2026.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.45 miles from Round Green.
Location: northbound between junctions J6 (Watford A405) and J8 (Hemel Hstead) .
Lane Closures : Lanes 2, 3 and 4 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : There will be three of four lanes closed.
Nearest town: 11.3 miles from Round Green.
Location: anticlockwise exit slip at junction J21 (M1) .
Lane Closures : Lanes 1 and 2 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.93 miles from Round Green.
Location: northbound entry slip at junction J6A (St Albans) .
Lane Closures : Lanes 1, 2, 3 and 4 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 11.63 miles from Round Green.
Location: northbound at junction J6 (Watford A405) .
Lane Closures : Lanes 1, 2 and 3 will be closed.
Due to: Road repairs are planned.
Status : Pending.
Schedule : Expect disruption everyday between 22:00 and 05:00 from 16 March 2026 to 20 March 2026.
Lanes Closed : All lanes will be closed.
Nearest town: 12.51 miles from Round Green.
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