Road closures: almost two dozen for South Gloucestershire drivers over the next fortnight

Drivers in and around South Gloucestershire will have 20 National Highways road closures to watch out for this week.

And six 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 eight closures already in place are expected to carry on this week:

• M4, from 6am May 20 to 6am June 16, slight delays (under 10 minutes): M4 westbound, junction 22, 50 mph speed restrictions.

• M48, from 9pm April 3 to 6am July 5, slight delays (under 10 minutes): M48 both directions mobile lane closure for drainage works.

• M4, from 6am May 30 to 6am July 7, slight delays (under 10 minutes): M4 eastbound, junction 22, 50 mph speed restrictions.

• M4, from 8pm May 30 to 6am July 10, moderate delays (10-30 minutes): M4 both directions, junction 22 closed between exit and entry slip road for carriageway repairs. Diversion via exit and entry slip roads.

• M4, from 5am March 17 to 9pm September 15, slight delays (under 10 minutes): M4 westbound, junction 19 to 20 - narrow lanes including 24/7 closure of offside running lane for SMART motorway improvements.

• M4, from 5am March 11 to 9pm September 15, slight delays (under 10 minutes): M4 eastbound, junction 20 to 19 - narrow lanes including 24/7 closure of offside running lane for SMART motorway improvements.

• M5, from 5am March 25 to 9pm September 15, slight delays (under 10 minutes): M5 northbound, junction 17 to 16 - narrow lanes for SMART motorway improvements.

• M32, from midnight, March 26 to 5am November 19, slight delays (under 10 minutes): M32, junction 1 to M4, junction 19 and M4, junction 19 to 23 used by GWR Railway Replacement Buses for Bristol Parkway to Newport route.

And a further 12 closures will begin over the next two weeks:

• M4, from 8pm June 5 to 6am July 25, slight delays (under 10 minutes): M4 Both Directions, junction 18 to junction 19 lane closures for bridge construction.

• A4, from 9pm June 5 to 6am June 6, moderate delays (10-30 minutes): M5 southbound, junction 17 exit and entry slip closed for road markings renewal. Diversion for exit slip via, junction 18, St. Brendans and M5 north. Diversion for entry slip via, junction 16 and back.

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

• M5, from 10pm June 8 to 6am June 9, slight delays (under 10 minutes): M5 southbound, junction 15 exit slips to M4 closed for maintenance works. Diversion via southbound to junction 16, to turn and return northbound.

• M4, from 9pm June 12 to 6am June 14, moderate delays (10-30 minutes): M4 eastbound, junction 23 to 22 Prince of Wales Bridge - carriageway closure for bridge maintenance, diversion via M48 Severn bridge.

• M32, from 10pm June 12 to 5am June 14, moderate delays (10-30 minutes): M4 westbound, junction 19 to 20 - carriageway closure for drainage work, diversion following solid triangle, exit M32 at, junction 1, A4174, A38, join M5 northbound, at, junction 16, join M4 westbound.

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

• M32, from 10pm June 14 to 6am June 16, moderate delays (10-30 minutes): M4 eastbound, junction 20 to 19 - carriageway closure for barrier works, diversion via M5, junction 16, A38, A4174 to M32, junction 1 and M4, junction 19.

• M4, from 10pm June 14 to 6am June 16, 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.

• M5, from 9pm June 16 to 6am June 17, slight delays (under 10 minutes): M5 northbound, junction 15 to 14 lane closure for road markings renewal.

• M5, from 9pm June 19 to 6am June 20, slight delays (under 10 minutes): M5 northbound, junction 17 to junction 15 lane closures for inspections.

• A4, from 10pm June 19 to 6am June 21, moderate delays (10-30 minutes): M5 southbound, junction 15 to 17 - carriageway closure for central reservation works, diversion from M5 southbound and M4 westbound, via M4 westbound, M49, M5, diversion from M4 eastbound, via M4, M32, A4174, A38, Hayes Way, Merlin Road, Join M5 at, junction 17.

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