Drivers in and around Cornwall will have 28 National Highways road closures to watch out for this week.

And two of them are expected to cause delays of between 10 and 30 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 October 20 to 6am October 25, slight delays (under 10 minutes): A30 Both Directions St Erth to Loggans Moor - carriageway closure for White Lining/Road Markings. *diversion via B3301.

• 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 24 closures will begin over the next seven days:

• A30, from 7pm October 24 to 6am October 28, slight delays (under 10 minutes): A30 westbound, Carland Cross lane closure for Cornwall Council works.

• A30, from 8pm October 24 to 4am October 25, slight delays (under 10 minutes): A30 Both Directions Avers to Tolvaddon lane closures for barrier repair.

• A30, from 8pm October 24 to 6am October 29, slight delays (under 10 minutes): A30 between Chiverton Cross and Carland Cross traffic signals for Chiverton to Carland improvement scheme.

• A38, from 7pm October 25 to 7am October 27, slight delays (under 10 minutes): A38 eastbound, Island Shop lane closure for statutory undertaker works.

• A38, from 8pm October 25 to 6am October 28, slight delays (under 10 minutes): A38 Both Directions Landrake Convoy Working for Road Marking.

• A30, from 8pm October 26 to 4am October 28, slight delays (under 10 minutes): A30 eastbound, Pennygillam exit slip road closure for drainage, diversion via Tavistock Road exit slip and return.

• A30, from 8pm October 27 to 5am October 28, slight delays (under 10 minutes): A30 both directions Newtown roundabout to St Erth roundabout. 2-way signals for electrical works.

• A38, from 8pm October 28 to 5am October 29, slight delays (under 10 minutes): A38 Both Directions Tideford to Landrake two-way signals for carriageway repair.

• A30, from 8pm October 28 to 4am October 29, moderate delays (10-30 minutes): A30 eastbound, Pennygillam entry slip road closed for drainage works. Diversion via A30 westbound to Kennards House Interchange, to turn and return eastbound.

• A38, from 8pm October 28 to 5am October 29, slight delays (under 10 minutes): A38 westbound, Dobwalls East entry slip road closure for maintenance works, diversion via Dobwalls to Twelvewoods roundabout.

• A38, from 8pm October 28 to 5am October 29, slight delays (under 10 minutes): A38 westbound, Tideford to Trerulefoot - Lane closure for carriageway - Reconstruction/Renewal.

• A30, from 8pm October 28 to 4am October 29, slight delays (under 10 minutes): A30 westbound, Lifton to Launceston Lane closure for barrier repair.

• A30, from 7pm October 31 to 6am November 11, slight delays (under 10 minutes): A30 eastbound and westbound, Bodmin Bypass between Callywith and Four Winds lane closures for surveys, No access to/from Helland junction on the A30 westbound.

• A30, from 7pm October 31 to 5am November 2, slight delays (under 10 minutes): A30 eastbound and westbound, Loggans Moor to Treswithian closed for maintenance works. Diversion via minor road through Roseworthy and Connor Downs.

• A30, from 8pm October 31 to 6am November 8, slight delays (under 10 minutes): A30 eastbound, Trebursye to Launceston convoy working for resurfacing.

• A30, from 8pm October 31 to 5am November 1, moderate delays (10-30 minutes): A30 eastbound, Highgate exit slip road closed for patching works. Diversion via A30 eastbound to Victoria junction, to turn and return westbound. Early warning signs to advise traffic to exit at the prior, junction (Fraddon).

• A30, from 9pm October 31 to 6am November 2, slight delays (under 10 minutes): A30 eastbound, Trebursye entry slip road closure for resurfacing, diversion via E Park Road to Kennards House.

• A30, from 7pm November 1 to 6am November 3, slight delays (under 10 minutes): A30 westbound, Fraddon to Summercourt lane closure and convoy for carriageway surfacing works.

• A30, from 8pm November 2 to 5am November 4, slight delays (under 10 minutes): A30 eastbound and westbound, St Erth to Loggans Moor Roundabout closed for drainage works. Diversion via B3301.

• A30, from 8pm November 3 to 6am November 4, 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 4 to 6am November 5, slight delays (under 10 minutes): A30 eastbound, Launceston, Pennygillam, junction entry slip road closure for resurfacing, diversion via A30 westbound to Trebursye.

• A30, from 8pm November 4 to 5am November 5, slight delays (under 10 minutes): A30 eastbound and westbound, Eastern Green Roundabout to Newtown Roundabout closed for drainage works. Diversion via Long Rock Road.

• A30, from 7am November 7 to 6pm November 10, slight delays (under 10 minutes): A30 eastbound and westbound, Bodmin Bypass between Callywith and Four Winds lane closures for surveys.

• A30, from 8pm November 7 to 6am November 8, slight delays (under 10 minutes): A30 eastbound, Launceston, Tavistock Road exit slip road closure for resurfacing, diversion via Pennygillam junction.

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