Drivers in and around the Forest of Dean will have 12 National Highways road closures to watch out for this week.

And one of them is expected to cause moderate delays – with motorists facing a holdup of between 10 and 30 minutes.

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

• M48, from 2am July 14 to 6am November 21, slight delays (under 10 minutes): M48 eastbound, Severn Bridge lane closure 24 / seven for main cable inspection and bridge maintenance works.

• M48, from 7pm June 22 2022 to 6am January 23 2023, slight delays (under 10 minutes): M48 westbound, Severn Bridge - Lane closure for main cable inspection works.

• M48, from 7pm May 9 2022 to 6am April 5 2023, slight delays (under 10 minutes): M48 eastbound, junction 2 to 1 Severn Bridge - carriageway closure for structure maintenance, diversion via M4 Prince of Wales Bridge.

• M48, from 7pm May 11 2022 to 6am April 7 2023, slight delays (under 10 minutes): M48 westbound, junction 1 to 2 Severn Bridge - carriageway closure for structure maintenance, diversion via M4 Prince of Wales bridge.

• M4, from 10pm May 23 2022 to 6am April 14 2023, 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.

And a further seven closures will begin over the next seven days:

• M48, from 7pm November 7 to 6am November 9, slight delays (under 10 minutes): M48 eastbound, junction 2 to 1 Severn Bridge - carriageway closure for structure maintenance, diversion via M4 Prince of Wales Bridge.

• A40, from 8pm November 8 to 6am November 9, slight delays (under 10 minutes): A40 eastbound and westbound, Highnam to Over roundabout, Gloucester lane closures and traffic signals for carriageway surveys, eastbound, left-hand turn onto B4215 closed. Diversion via A40 eastbound to Over roundabout and return.

• M48, from 7pm November 9 to 6am November 11, slight delays (under 10 minutes): M48 westbound, junction 1 to 2 Severn Bridge - carriageway closure for structure maintenance, diversion via M4 Prince of Wales bridge.

• A40, from 9.30am to 3.30pm on November 11, slight delays (under 10 minutes): A40 Dursley Cross traffic lights for pole testing (BT).

• A40, from 8pm November 14 to 6am November 15, slight delays (under 10 minutes): A40 eastbound, Highnam to Over roundabout, Gloucester lane closure for carriageway surveys, No access to Linton Farm from eastbound, carriageway. Diversion via Over roundabout.

• M4, from 9pm November 14 to 6am November 16, moderate delays (10-30 minutes): M4 eastbound, Prince of Wales Bridge carriageway closed overnight for bridge maintenance. Includes westbound, safety lane closure. Diversion via M48 Severn Bridge.

• M5, from 10pm November 17 to 6am November 18, slight delays (under 10 minutes): M5 southbound, junction 11a to junction 12 lane closure for electrical works.

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