Work on a £385,000 road improvement scheme between Limavady and Dungiven is expected to be complete by mid-January next year, officials have said.
The scheme on the B68 Ballyquin Road at Inisconagher between Limavady and Dungiven is underway.
Road closures and diversions will be in place.
Transport Minister Michelle McIlveen said: “The improvement scheme represents a significant investment and will deliver long term safety benefits for drivers using the road.”
Work includes carriageway widening and the introduction of new verges.
“The work will provide improvements to the horizontal and vertical alignment of the Ballyquin Road for a length of over a third of a mile (600m) from the junction with the Derryork Road towards Dungiven,” a DRD spokesperson said.
“To help ensure the safety of road users and contractors it will be necessary to put in place road closures with local, well signposted, diversions.
“Local access will be maintained throughout the scheme.”
The Ballyquin Road will be closed between Derryork Road and Camnish Road with Dungiven bound traffic diverted via Derryork Road, Drumrane Road and Main Street.
Limavady bound traffic will be diverted via Main Street, Dungiven, Drumrane Road and Derryork Road.
Drumbane Road from Ballyquin Road to Gortnagross Road will also be closed with traffic diverted via Derryork road, Drumrane Road, Main Street and Garvagh Road, Dungiven, Legavallen Road and Gortnagross Road.
“Drivers should expect some delays and are advised to allow additional time when travelling in the area.
“As with any scheme of this size, severe weather may impact on completion times,” said a spokesperson.