Cornwall's motorists will have 12 road closures to avoid nearby on the National Highways network this week.

But drivers will be able to take some solace in the fact that all of them are only expected to cause slight delays, of less than 10 minutes.

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

• A30, from 8pm July 4 2022 to 6am July 1 2023, slight delays (under 10 minutes): A30 eastbound, Zelah exit slip road closure for improvement scheme, diversion via Henver, junction .

• A30, from midnight, September 1 2020 to midnight, December 1 2023, slight delays (under 10 minutes): A30 Carland Cross to Chiverton Cross improvement scheme.

• A30, from 8pm June 30 2021 to 6am December 1 2023, slight delays (under 10 minutes): A30 Zelah narrow lanes and 50 mph speed limit for Chiverton to Carland improvement scheme.

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

• A30, from 8pm September 5 to 4am September 6, slight delays (under 10 minutes): A30 both directions Castle-an-Dinas lane closures for barrier repairs.

• A30, from 8pm September 5 to 6am September 12, slight delays (under 10 minutes): A30 between Chiverton Cross and Carland Cross traffic signals for Chiverton to Carland improvement scheme.

• A30, from 7pm September 12 to 6am September 15, slight delays (under 10 minutes): A30 eastbound and westbound, Avers junction, Redruth exit slip lane closures for Cornwall Council maintenance works.

• A30, from 8pm September 12 to 5am September 15, slight delays (under 10 minutes): A30 eastbound, Kennards House lane closure for Openreach.

• A30, from 8pm September 12 to 4am September 13, slight delays (under 10 minutes): A30 eastbound, Carminow exit slip road closed for horticulture works, *diversion via A30 eastbound, exit at Hellend, Old Callywith Road westbound, A38.

• A30, from 8pm September 12 to 5am September 15, slight delays (under 10 minutes): A30 eastbound, Trebursye entry slip lane closure for Openreach.

• A30, from 8pm September 13 to 4am September 14, slight delays (under 10 minutes): A30 westbound, Innis Downs lane closure for vegetation works.

• A30, from 7pm September 15 to 6am September 16, slight delays (under 10 minutes): A30 eastbound and westbound, Tolvaddon exit slip lane closures for Cornwall Council works.

• A30, from 8pm September 19 to 4am September 20, slight delays (under 10 minutes): A30 eastbound, Trebursye entry slip road closure for vegetation works, *diversion via E Park Road to Kennards House junction.

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