Swindon's motorists will have five road closures to avoid nearby on the National Highways network this week, while Wiltshire will have dozens.

One of them is expected to cause delays of between 10 and 30 minutes.

The latest expected works list, with notes from National Highways, shows closures will begin over the next two weeks near Swindon:

• A419, from 8pm August 12 to 6am August 13, moderate delays (10-30 minutes): M4 eastbound, junction 15 to junction 14, carriageway closure for electrical work.

• M4, from 9pm August 16 to 6am August 17, slight delays (under 10 minutes): M4 westbound, junction 15 entry slip, lane closure for horticultural works.

• A303, from 7pm August 8 to 6am August 15, moderate delays (10-30 minutes): A303 eastbound, Countess roundabout to Parkhouse closed for carriageway repairs. Diversion via A345, Portway and A338 to Parkhouse. Diversion for A3028 via A3028, A345 Countess roundabout to follow the main diversion.

• M4, from 9pm August 8 to 6am August 13, slight delays (under 10 minutes): M4 westbound, junction 17 to 18, lane closures for carriageway repairs.

• M4, from 10pm August 8 to 6am August 10, slight delays (under 10 minutes): M4 eastbound, junction 17 to junction 16, lane closure for barrier repairs.

And in Wiltshire, some closures already in place are expected to carry on this week:

• M4, from 8pm July 1 to 6am August 10, slight delays (under 10 minutes): M4 westbound, junction 17 exit slip, lane closure for local authority works.

• A303, from 6pm August 3 to 9am August 18, moderate delays (10-30 minutes): A303 westbound, Countess to Longbarrow roundabout closed for carriageway repairs. Diversion via A345, The Packway, B3086 and A360.

• A303, from 6pm August 3 to 9am August 18, moderate delays (10-30 minutes): A303 eastbound, Longbarrow to Countess roundabout closed for carriageway repairs. Diversion for eastbound, closure via A360, B3086, The Packway, A345.

• M4, from 9pm August 1 to 6am August 31, slight delays (under 10 minutes): M4 both directions, junction 15 to 22 - mobile lane closure for sweeping and drainage works.

• A36, from 8pm January 2 to 5am December 30, slight delays (under 10 minutes): A36 Both Directions Beckington to Ower mobile lane closures for drainage.

• M4, from 11.59pm April 27 2021 to midnight, July 31 2025, slight delays (under 10 minutes): M4, junction 17 to 16 eastbound, 24hr hard shoulder closure for carriageway defect repair.

And the following closures will begin over the next two weeks in Wiltshire:

• A36, from 8pm August 12 to 6am August 13, moderate delays (10-30 minutes): A36 Both directions Beckington to Warminster Services, two-way convoy traffic lights for technology replacements.

• A419, from 8pm August 12 to 6am August 13, moderate delays (10-30 minutes): M4 eastbound, junction 15 to junction 14, carriageway closure for electrical work.

• A303, from 9pm August 12 to 6am August 16, moderate delays (10-30 minutes): A36 both directions Deptford to Wilton roundabout closed for carriageway repairs, diversion via A303, A360 to St. Pauls roundabout and vice versa.

• A303, from 10am to 2pm on August 13, slight delays (under 10 minutes): A303 westbound, Chicklade, lane closure for sign works.

• A36, from 8pm August 13 to 6am August 17, moderate delays (10-30 minutes): A36 Both directions Chapmanslade to Warminster, two-way traffic lights for technology replacements.

• M4, from 9pm August 13 to 6am August 15, slight delays (under 10 minutes): M4 westbound, junction 17 to 18, lane closures for carriageway repairs.

• M4, from 9pm August 14 to 6am August 15, slight delays (under 10 minutes): M4 eastbound, junction 18 to 17, lane closure for electrical works.

• A36, from 8pm August 15 to 6am August 17, slight delays (under 10 minutes): A36 Newton, multiway traffic lights for surveys.

• A303, from 8pm August 15 to 6am August 20, moderate delays (10-30 minutes): A303 eastbound, Solstice Park exit and entry slip closed for carriageway repairs, diversion for exit slip to Parkhouse and return, diversion for entry slip via Porton Road, Solstice Park Avenue, A303 westbound to Countess and A303 eastbound.

• M4, from 9pm August 15 to 6am August 20, slight delays (under 10 minutes): M4 westbound, junction 17 to 18, lane closures for carriageway repairs.

• A303, from 9pm August 16 to 5am August 17, moderate delays (10-30 minutes): A36 Both directions St Pauls Rbt to Quidhampton, closed for carriageway renewal, diversion A36, A303 and A360 - Symbol Solid Triangle.

• A36, from 8am August 19 to 5pm August 21, slight delays (under 10 minutes): A36 both directions Codford St Peter - two-way signals for electrical works on behalf of ESP Electricity. Includes 40mph speed limit.

• M4, from 8pm August 19 to 6am August 31, slight delays (under 10 minutes): M4 eastbound, junction 18 to junction 17 lane closure for barriers.

• A303, from 9pm August 19 to 6am August 20, slight delays (under 10 minutes): A303 Furze Hedge slip road to A350 closed for white lining, diversion via B3089.

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