Surfacing works will take place on the N13 between Burt Chapel and the border at Bridgend from 30th July for a six week period ending on the 7th Sept.
The works will involve replacing the traffic management, surface course replacement, drainage works and road lining.
There will be a special speed limit of 60 kph applied to this section for the duration of the works.
Diversion will be in place for the Derry/ Inishowen bound traffic via the R239 (Slab Road) and the main N13 will still be open to Letterkenny bound traffic from Bridgend.