A30 - Tongue End, east of Okehampton
Eastbound lane closure for 7pm until 6am for white lining. 17-20 August.
A30 - Between Tongue End and Whiddon Down, east of Okehampton
Westbound carriageway closure 7pm until 6am for road markings. Diversion via South Zeal and Sticklepath. 17-20 August.
A30 - Okehampton Bypass
Westbound lane closure 7pm until 6am for white lining. 20-21 August.
A38 Drumbridges, Heathfield, south of Exeter: junction improvement scheme
There are various lane closures on sliproads and the roundabout until 4 September.
A38 Kennford, south of Exeter: junction improvement scheme
Work in the coming weeks includes westbound lane closures between 7pm and 6am and eastbound lane closures from 8pm to 6am until 21 August.
A30 between Temple and Higher Carblake, east of Bodmin: junction improvement scheme
There are 24-hour lane closures eastbound and westbound, with a temporary 40mph limit and temporary traffic lights between 8pm and 6am up until 31 March 2017.
Tideford, west of Plymouth
Traffic signals 7.30pm-5am for bridge works 17 August- 12 September.
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.