The Forest of Dean's motorists will have 10 road closures to avoid nearby on the National Highways network this week.

And one of them is expected to cause major delays – with drivers facing a holdup of at least 30 minutes. Another two will cause moderate delays of between 10 minutes and half an hour.

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

• A40, from 9.49am December 5 2023 to 11.59pm June 1 2024, slight delays (under 10 minutes): A40 Boxbush to Dursley Cross - traffic lights in place for carriageway repairs due to landslide.

• A38, from 8pm January 8 to 6am July 31, severe delays (more than 30 minutes): M5 northbound and southbound, junction 7 to junction 11, M50 eastbound, and westbound, junction 2 to M5, carriageway, slip road, lane closures, with 24/7 narrow lanes, lane closure, and 50mph speed limit due to improvement works, diversion via National Highways and local authority network.

And a further eight closures will begin over the next two weeks:

• M48, from 7pm February 5 to 6am February 7, moderate delays (10-30 minutes): M48 eastbound, junction 2 to 1 Severn Bridge - carriageway closure for structure maintenance. Diversion via M4 Prince of Wales Bridge.

• M48, from 7pm February 5 to 6am February 7, slight delays (under 10 minutes): M48 westbound, junction 1 to 2 Severn Bridge lane closure for structure maintenance works.

• M50, from 9pm February 6 to 6am February 10, slight delays (under 10 minutes): M50 both directions, junction 1 to junction 2, Lane closure for maintenance works.

• A40, from 8am February 7 to 5pm February 9, slight delays (under 10 minutes): A40 Longhope traffic lights for Gigaclear works.

• M48, from 7pm February 7 to 6am February 9, moderate delays (10-30 minutes): M48 westbound, junction 1 to 2 Severn Bridge carriageway closed for structure maintenance works. Diversion via M4 Prince of Wales Bridge.

• M48, from 9pm February 7 to 6am February 9, slight delays (under 10 minutes): M48 eastbound, junction 2 to 1 Severn Bridge - lane closure for structure maintenance.

• M4, from 9pm February 9 to 6am February 10, slight delays (under 10 minutes): M4 westbound, junction 22 to 23 Prince of Wales Bridge - carriageway closure for structure maintenance, diversion via M48 Severn Bridge.

• M4, from 9pm February 14 to 6am February 16, slight delays (under 10 minutes): M4 eastbound, junction 23 to 22 Prince of Wales Bridge - lane closure for structure maintenance.

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