Drivers in and around St Albans will have nine National Highways road closures to watch out for this week.

Four of them are expected to cause delays of between 10 and 30 minutes.

The latest expected works list, with notes from National Highways, shows that two closures already in place are expected to carry on this week:

• A405, from 10pm January 13 to 5am January 22, moderate delays (10-30 minutes): M1 northbound,, junction 6 to junction 8 - carriageway closure, lane closure and diversion route for carriageway - reconstruction/renewal on behalf of National Highways.

• A414, from 10.30pm January 7 to 5am February 29, slight delays (under 10 minutes): A414 Watling Street Roundabout, Lane closures for surveying works on behalf of Volkafitzpatrick.

A further seven closures will begin over the next two weeks:

• A414, from 10pm January 15 to 5am January 16, slight delays (under 10 minutes): M1 southbound,, junction 8 - exit slip road lane closure for barrier/fence safety repairs on behalf of National Highways.

• M1, from 10pm January 17 to 5am January 18, slight delays (under 10 minutes): M1 southbound,, junction 9 to junction 8 - lane closure due to carriageway - reconstruction/renewal works on behalf of Ringway.

• M1, from 10pm January 18 to 5am January 19, slight delays (under 10 minutes): M1 northbound,, junction 6 to junction 7 - lane closures for electrical works on behalf of National Highways.

• A1081, from 10pm January 18 to 5am January 19, moderate delays (10-30 minutes): M1 southbound,, junction 9 - entry slip road closure, lane closure and diversion route for communications works on behalf of Ringway.

• M1, from 10pm January 19 to 5am January 20, slight delays (under 10 minutes): M1 northbound, junction 8 to junction 9 - lane closure due to carriageway - reconstruction/renewal works on behalf of Ringway.

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• A414, from 10pm January 22 to 6am January 27, moderate delays (10-30 minutes): M1 northbound, junction 6 to junction 6A, carriageway closure for resurfacing works, diversion via National Highways and Local Authorities roads.

• A405, from 10pm January 29 to 5.30am February 2, moderate delays (10-30 minutes): M25 clockwise, junction 20 to junction 21A, carriageway and lane closure for surfacing works, diversion via National Highways and Local Authorities roads.

National Highways is responsible for maintaining motorways and major A-roads, so closures of smaller roads will not be included in their schedule.