Cornwall's motorists will have 20 road closures to avoid nearby on the National Highways network this week.

But the news isn't too bad, with all of them only expected to cause slight delays, of under 10 minutes.

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

• A30, from 8pm November 14 to 6am November 26, slight delays (under 10 minutes): A30 between Chiverton Cross and Carland Cross traffic signals for Chiverton to Carland improvement scheme.

• A38, from 8pm November 14 to 6am December 2, slight delays (under 10 minutes): A38 Both Directions Trerulefoot to Carkeel convoy working for road marking.

• 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 16 closures will begin over the next seven days:

• A30, from 7pm November 21 to 6am November 26, slight delays (under 10 minutes): A30 eastbound, Chiverton Cross lane closure for Chiverton to Carland improvement scheme.

• A30, from 7pm November 21 to 6am November 26, slight delays (under 10 minutes): A30 eastbound, Trebursye to Launceston convoy working for resurfacing.

• A30, from 8pm November 21 to 6am November 22, slight delays (under 10 minutes): A30 eastbound, Chy-an-Mor to Newtown carriageway closure for resurfacing, diversion via Longrock Road.

• A30, from 8pm November 21 to 6am November 23, slight delays (under 10 minutes): A30 eastbound, Trebursye entry slip road closure for resurfacing, diversion via E Park Road to Kennards House.

• A30, from 8pm November 22 to 6am November 29, slight delays (under 10 minutes): A30 westbound, Newtown to Chy-an-Mor carriageway closure for resurfacing, diversion via Longrock Road.

• A30, from 7pm November 24 to 6am November 29, slight delays (under 10 minutes): A30 eastbound, Pennygillam junction, Launceston to Liftondown carriageway closures for resurfacing, diversion via Link Road, Hurdon Road and A388.

• A30, from 7pm November 26 to 6am November 28, slight delays (under 10 minutes): A30 both directions Tolvaddon to Avers closed for general maintenance works. Diversion via A3047.

• A30, from 9.30am to 3.30pm on November 28, slight delays (under 10 minutes): A30 Both Directions St Erth to Loggans Moor mobile stop and go works for barrier inspections.

• A38, from 9.30am November 28 to 3.30pm November 29, slight delays (under 10 minutes): A38 both directions Turfdown roundabout to Carkeel - mobile stop and go boards on single carriageway sections - for safety barrier inspections.

• A38, from 9am to 4pm on November 29, slight delays (under 10 minutes): A38 both directions Lower Clicker lane closures for survey works.

• A30, from 7pm November 29 to 6am December 1, slight delays (under 10 minutes): A30 eastbound, Trebursye to Launceston convoy working for resurfacing.

• A30, from 8pm November 29 to 6am December 1, slight delays (under 10 minutes): A30 eastbound, Launceston, Pennygillam, junction exit slip road closure for resurfacing, diversion via A30 eastbound to Tavistock Road, junction and return.

• A30, from 8pm November 29 to 6am December 3, slight delays (under 10 minutes): A30 eastbound, Chy-an-Mor to Newtown carriageway closure for resurfacing, diversion via Longrock Road.

• A38, from 9pm December 2 to 6am December 20, slight delays (under 10 minutes): A38 both directions Island Shop to Trerulefoot - Convoy Working for White Lining/Road Markings.

• A38, from 10am to 9pm on December 3, slight delays (under 10 minutes): A38 westbound, exit slip after Tamar Bridge lane closure for Saltash Christmas Festival event.

• A30, from 7pm December 5 to 6am December 10, slight delays (under 10 minutes): A30 both directions Chiverton Cross to Boxheater (B3285) carriageway closures for improvement scheme, diversion via A3075 and B3285.

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