Drivers in and around Bath and North East Somerset will have four National Highways road closures to watch out for this week.

And three of them are expected to cause moderate delays – with motorists facing waits of between 10 and 30 minutes.

The latest expected works list, with notes from National Highways, shows that four closures are due to start over the next two weeks:

• A4, from 11pm January 5 to 5am January 6, moderate delays (10-30 minutes): A46 both directions Cold Ashton roundabout to London Road roundabout carriageway closure for construction improvement/upgrade works, diversion via - A420 eastbound, A350 southbound, A4 westbound to rejoin A46 at Batheaston roundabout.

• A4, from 7.30pm January 18 to 6am January 19, moderate delays (10-30 minutes): A46 both directions Cold Ashton roundabout to London Road roundabout carriageway closure for construction improvement/upgrade works, diversion via - A420 eastbound, A350 southbound, A4 westbound to rejoin A46 at Batheaston roundabout.

• A46, from 4am January 19 to 6am March 21, slight delays (under 10 minutes): A46 both directions Cold Ashton roundabout to London Road roundabout contraflow installed for construction improvement/upgrade works.

• A4, from 7.30pm January 19 to 6am February 9, moderate delays (10-30 minutes): A46 both directions Cold Ashton roundabout to London Road roundabout carriageway closure for carriageway improvement scheme, southbound, diversion via - A420, A350 and A4, northbound, diversion via - As above in reverse.

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