A THREE-week road closure to allow drainage works will mean detours for drivers from Monday.
The road will be closed to vehicles 24 hours a day for safety.
A Devon Highways spokesman said: ‘Due to the nature of the works a road closure is required and the diversionary route for traffic will signposted and advance signs will also be placed on the highway.
‘We apologise in advance for any inconvenience caused, including construction noise. We will endeavour to keep all disruption to a minimum.’
The planned on-site working hours will be Monday, October 10 to Friday, November 4.
The programme of works comprises the replacement of drainage and side haunching, and resurfacing and relining if appropriate.