The A7 south of Langholm in Dumfriesshire will be closed in both directions between the B720 Hollows junction and the town from 7.30pm to 6am from Monday to Wednesday, October 28 to 30.
A clearly signed diversion route suitable for trunk road traffic will be in place between Hawick and Canonbie, via the A698, A6088 and B6357 – adding 7.7 miles and 20 minutes to affected journeys.
Originally planned to take place over five nights, it has been reduced to three “as a knock-on effect of weather delays elsewhere”.
The overnight closures will allow Transport Scotland’s operating company BEAR Scotland to make improvements to the standard of road markings across this section, creating safer journeys for motorists.
To ensure the safety of road users and the workforce during these works, BEAR Scotland’s south east network manager Tommy Deans said: “These new road markings will enhance safety for users of the A7.
“Unfortunately, due to the nature of the work being done, we have no option but to close the road while these improvements are completed.
“We’ve scheduled the works at night to minimise disruption, however, if you do need to use this route at night our advice is to plan ahead and allow some extra time for your journey.
“We’re grateful to motorists and local communities for their understanding.“
Emergency services will be given access through the works at all times and local access for residents within the closure points will be maintained when it is safe to pass through the work area.
Relevant stakeholders have been consulted in advance to make them aware of the plans and all work is weather dependent and subject to postponement or cancellation in the event of adverse conditions.