The scheduled motorway closures for the next two weeks have been confirmed, as the run-in to the Christmas period begins.

M1, M25, A1M, A405, and A414 works in the south of Hertfordshire up to December 16 will include safety repairs, maintenance, testing, and structure inspections.

Some are only set to cause certain lanes to shut, while others including an M1 to M25 interchange closure - each night between December 9 and December 14 - will require diversions.

See the full list below:

M1:

  • From 10pm December 4 to 5am December 5: Slight delays (under 10 minutes). Northbound, junction London Gateway Services to junction 5. Lane closures for urgent carriageway repairs.
  • From 10pm December 9 to 5am December 11: Slight delays (under 10 minutes). Southbound, junction 4 to junction 3. Lane closures for structure inspections.
  • From 10pm December 9 to 6am December 14: Moderate delays (10-30 minutes). M25 anti clockwise, junction 21A to junction 20. Carriageway closure for testing works. Diversion via National Highways and local authorities roads.
  • From 10pm December 10 to 5am December 11: Slight delays (under 10 minutes). Northbound, junction 8 to junction 9. Lane closures due to communications works on behalf of National Highways.
  • From 10pm December 11 to 5am December 12: Slight delays (under 10 minutes). Northbound, junction 5 to junction 6. Lane closures for urgent safety fence repairs.
  • From 10pm December 16 to 5am December 19: Slight delays (under 10 minutes). Southbound, junction 5 to junction London Gateway Services. Lane closures for safety fence repairs.

M25:

  • From 10pm December 4 to 5am December 5, slight delays (under 10 minutes). Clockwise, junction 21A to junction 22. Lane closure for urgent technology works.
  • From 10pm December 4 to 5.30am December 6: Slight delays (under 10 minutes). Anti-clockwise, junction 24 to junction 23. Lane closure for emergency area upgrade works.
  • From 10pm December 5 to 5am December 6, slight delays (under 10 minutes). Clockwise, junction 21A to junction 22. Lane closures for urgent carriageway repairs.
  • From 11pm December 6 to 5.30am December 7: Moderate delays (10-30 minutes). Anti-clockwise, junction 24 to junction 23. Lane and slip road closure for emergency area upgrade works. Diversion via National Highways roads.
  • From 10pm December 9 to 5.30am December 10: Slight delays (under 10 minutes). Clockwise, junction 23 to junction 24. Lane closure for Midas installation works.
  • From 10pm December 9 to 6am December 14: Slight delays (under 10 minutes). Clockwise, junction 21 to junction 22. Lane closures for weather station instillation works.
  • From 10pm December 10 to 5am December 11: Moderate delays (10-30 minutes). Anti clockwise, junction 24 to junction 23. Lane closures and slip road closures for maintenance works. Diversion via National Highways roads.
  • From 10pm December 11 to 5.30am December 13: Slight delays (under 10 minutes). Anti-clockwise, junction 24 to junction 23. Lane closure for emergency area upgrade works.
  • From 10pm December 16 to 5.30am December 19: Slight delays (under 10 minutes): Clockwise, junction 22 to junction 24. Lane closure for SVD Upgrade.

A1:

  • From 10pm December 2 to 5am December 3: slight delays (under 10 minutes). A1(M) southbound, junction Bignells corner to A1 southbound, junction Rowley Lane. Lane closures for urgent safety fence repairs.
  • From 10pm December 2 to 5am December 3: Slight delays (under 10 minutes). A1 northbound, junction Rowley Lane to junction Bignells corner. Lane closures for urgent safety fence repairs.
  • From 11pm December 6 to 5am December 7: Moderate delays (10-30 minutes). M25 clockwise, junction 23, A1 northbound, junction Bignells corner and A1(M) southbound junction 2 to junction Bignells corner. Lane and slip road closure for asset inspections. diversion via local authority and National Highways roads.
  • From 10pm December 9 to 5am December 10: Moderate delays (10-30 minutes). A1(M) northbound, junction 1 to junction 3, carriageway closure, entry slip road closure and lane closures for maintenance works. Diversion via National Highways and local authority roads.
  • From 10pm December 16 to 5.30am December 19: Moderate delays (10-30 minutes). M25 clockwise and anti-clockwise, junction 23 roundabout and all approaches. Lane and slip road closure for surfacing works. Diversion via National Highways and local authority roads.

Other:

  • A414 - From 10pm December 10 to 5am December 11: Slight delays (under 10 minutes). M1 northbound, junction 9. Entry slip road closure and diversion route for communications on behalf of National Highways.
  • A404 - From 10pm December 16 to 5am December 17: Slight delays (under 10 minutes). M25 clockwise and anti-clockwise, junction 21A. Lane closures for maintenance works.