North Somerset's motorists will have seven road closures to avoid nearby on the National Highways network this week.

And two of them are expected to cause moderate delays – with drivers facing holdups 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:

• M5, from 8pm May 12 to 6am June 4, slight delays (under 10 minutes): M5 southbound, junction 20 to junction 21 lane closures for survey works.

• M5, from 8pm May 12 to 6am June 4, slight delays (under 10 minutes): M5 northbound, junction 22 to junction 20 lane closures for survey works.

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

• M5, from 8pm June 4 to 6am June 29, slight delays (under 10 minutes): M5 northbound, junction 22 to junction 20 lane closures for survey works.

• M5, from 8pm June 4 to 6am June 29, slight delays (under 10 minutes): M5 southbound, junction 20 to junction 21 lane closures for survey works.

• M5, from 10pm June 4 to 6am June 7, moderate delays (10-30 minutes): M5 southbound, junction 21 exit slip closed, for survey works, diversion southbound to junction 22 and return.

• M5, from 10pm June 5 to 6am June 7, moderate delays (10-30 minutes): M5 northbound, junction 21 entry slip closed, for survey works, diversion southbound to junction 22 and return.

• M5, from 9pm June 7 to 6am June 8, slight delays (under 10 minutes): M5 southbound, junction 20 to junction 21, 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.