Cornwall's motorists will have 18 road closures to avoid nearby on the National Highways network this week.

And one of them is expected to cause delays of between 10 minutes and half an hour.

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 15 closures will begin over the next seven days:

A38, from 8pm September 26 to 6am October 8, moderate delays (10-30 minutes): A38 both directions Landrake carriageway closures for resurfacing, diversion via A390 from Liskeard and A388 to Carkeel.

A30, from 8pm September 27 to 5am September 28, slight delays (under 10 minutes): A30 eastbound, Scorrier entry slip road closed for resurfacing works. Diversion via old A30 to Chiverton Cross Roundabout.

A30, from 8pm September 28 to 5am September 29, slight delays (under 10 minutes): A30 eastbound, Innis Downs to Carminow Cross - Lane closure for carriageway Reconstruction/Renewals.

A30, from 8pm September 28 to 5am September 29, slight delays (under 10 minutes): A30 westbound, Bolventor to Colliford Lake - Lane closure for carriageway Reconstruction/Renewals.

A38, from 8pm September 29 to 5am September 30, slight delays (under 10 minutes): A38 westbound, Dobwalls East entry slip road closure for maintenance works, diversion via Dobwalls to Twelvewoods roundabout.

A30, from 7pm October 3 to 6am October 4, slight delays (under 10 minutes): A30 westbound, Chiverton Cross to Scorrier lane closure and convoy for carriageway surfacing works.

A30, from 7pm October 3 to 6am October 7, slight delays (under 10 minutes): A30 westbound, Longrock Bypass lane closure for Cornwall Council works.

A38, from 7.30pm October 3 to 6am October 8, slight delays (under 10 minutes): A38 both directions Carkeel to Saltash Tunnel closed for maintenance works. , diversion via B3271.

A30, from 8pm October 3 to 4am October 8, slight delays (under 10 minutes): A30 eastbound, Bodmin Bypass lane closure for vegetation works.

A30, from 7pm October 4 to 6am October 5, slight delays (under 10 minutes): A30 eastbound, Bolventor to Cannaframe lane closure and convoy for carriageway surfacing works.

A30, from 7pm October 5 to 6am October 6, slight delays (under 10 minutes): A30 eastbound and westbound, Two Bridges lane closure and convoy for carriageway surfacing works. Central reservation gaps closed. Eastbound, traffic diverted via Kennards House. Westbound, traffic diverted via Fivelanes.

A30, from 7pm October 6 to 6am October 7, slight delays (under 10 minutes): A30 westbound, Launceston lane closure and convoy for carriageway surfacing works.

A30, from 8pm October 6 to midnight, October 7, slight delays (under 10 minutes): A30 westbound, Tavistock Road entry slip road closed for carriageway surfacing works. Diversion via Tavistock Road and Western Road to Pennygillam junction.

A30, from midnight, to 6am on October 7, slight delays (under 10 minutes): A30 westbound, Pennygilam entry slip road closed for carriageway surfacing works. Diversion via Western Road and Tavistock Road to Tavistock Road junction.

A30, from 8pm October 10 to 6am October 19, slight delays (under 10 minutes): A30 Ludgvan to Canon's Town traffic signals and convoy working for road markings.

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