A30 - Between Chiverton Cross and Carland Cross, east of Redruth
Eastbound and westbound carriageway closures 8pm until 6am for routine maintenance. Westbound diversion via A3058 from Summercourt, A392 and A3075 to Chiverton Cross. Reverse for eastbound. 14 to 19 September.
A30 - Plusha, west of Launceston
Westbound lane closure 9am to 4pm for electrical repairs. 15 September.
A30 - M5 Jct 31, Exeter
Closure of southbound exit slip to A30 8pm-6am for resurfacing. Diversion southbound via A38 to Kennford, then northbound to junction 31. 7 to 12 September.
A30 - Okehampton Bypass
Eastbound lane closure 7pm-6am for white lining. 10 to 12 September.
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. Two way traffic lights within Temple closure for BT works. 15 to16 September.
A38 - Plympton, east of Plymouth
Eastbound and westbound lane closure 5.30am to 3.30pm for barrier works. 14 to 16 September.
A38 - South Brent, east of Plymouth
Eastbound and westbound lane closure 7pm to 4am for barrier works. 14 to 19 September.
A38 Drumbridges, Heathfield, south of Exeter: junction improvement scheme
Eastbound entry slip closed 7pm to 6am for junction improvements. No access to the roundabout from A382 west of Drumbridges. Locally signed diversions. 9 to 10 September.
A38 - Tideford, west of Plymouth
Traffic signals 7.30pm to 5am for bridge works 17 August to 12 September.
A38 - Between Marsh Mills and Deep Lane, Plymouth
Eastbound and westbound lane closure 7pm to 6am for bridge replacement scheme. 17 to 27 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.