Two new motorway closures expected to cause up to 30-minute delays in Hertfordshire are part of the latest list of upcoming works.

Necessary carriageway repairs mean the M1 will be closed northbound between junctions 4 and 5, with a diversion in place, from 10.30pm on Sunday (October 27) to 5.30am on Monday.

Then between 11pm on Friday, November 1, to 5am the next day the M25 will be shut clockwise from junction 23 (South Mimms) to junction 24 (Potters Bar). The entry slip will also be shut and a diversion route will be in place, while maintenance works take place.

In both cases, delays of between 10 and 30 minutes are expected.

See the full list of motorway closures near Watford below:

M25:

  • (In progress) From 8pm September 30 to 6am December 20: Moderate delays (10-30 minutes). M25 clockwise, junction 23 to junction 24. Lane and slip road closure for scheme works. Diversion via National Highways roads.
  • From 10pm October 21 to 5.30am October 26: Slight delays (under 10 minutes). Anti-clockwise, junction 24 to junction 23. Lane closure for emergency area upgrade works.
  • From 10pm October 21 to 5am November 16: Slight delays (under 10 minutes). Clockwise, junction 23 to junction 24. Mobile lane closures in both directions for horticultural works.
  • From 10pm October 22 to 5am October 24: Moderate delays (10-30 minutes). Anti clockwise, junction 23 to junction 22. Lane closures, carriageway closure and entry slip road closure for maintenance works. Diversion via local authority and National Highways roads.
  • From 10pm October 22 to 5am October 23: Slight delays (under 10 minutes). Clockwise, junction 22 to junction 23. Lane closures for urgent technology works.
  • From 10pm October 28 to 5am October 30: Slight delays (under 10 minutes). Anti-clockwise, junction 24 to junction 23. Lane closure for technology works.
  • From 10pm October 28 to 5.30am November 1: Slight delays (under 10 minutes). Clockwise, junction 22 to junction 23. Lane closure for surfacing works.
  • From 11pm November 1 to 5am November 2: Moderate delays (10-30 minutes). Clockwise, junction 23 to junction 24. Lane closures and entry slip road closure for maintenance works. Diversion via National Highways roads.

M1:

  • From 8pm October 21 to 5am October 22: Slight delays (under 10 minutes). Southbound, junction 5 to junction 4. Lane closures for urgent technology works.
  • From 10.30pm October 27 to 5.30am October 28: Moderate delays (10-30 minutes). Northbound, junction 4 to junction 5. Lane and slip road closure for carriageway repairs. Diversion via National Highways roads.

A1:

  • From 9.30am October 23 to 4pm October 31: Slight delays (under 10 minutes). A1(M) northbound, junction 1 to junction 2. Hard shoulder closure for speed reduction scheme.
  • From 10pm October 23 to 5.30am November 1: Slight delays (under 10 minutes). A1(M) northbound, junction 1 to junction 2. Hard shoulder closure for speed reduction works.
  • From 11pm October 25 to 5am October 26: Moderate delays (10-30 minutes). A1(M) southbound, junction 2 to junction 1. Lane closures and carriageway closure between exit and entry slip road for maintenance works. Diversion via National Highways roads.
  • From 10pm November 4 to 6am November 9: Slight delays (under 10 minutes). A1(M) southbound, junction 2 to junction 1. Lane closure for speed reduction works.