A £420,000 resurfacing scheme on the A6 Glenshane Road at Curran is due to be substantially complete on Friday, the Department for Infrastructure has said.
Traffic management includes a lane closure, with diversions for Magherafelt- and Belfast-bound traffic. A convoy system is operating for vehicles travelling towards Maghera and Londonderry.
The department said the planned completion date of Friday 21 August is subject to favourable weather.