Montgomery Co., VA - An eight day detour on I-81 is set to begin Sunday.
Crews will be tearing up asphalt between the 120 and 125 mile markers in the northbound lanes.
Starting Sunday at 7 p.m. traffic will be detoured onto US 460 in Christiansburg at the 118 mile marker.
Motorists will get back on the interstate at the Dixie Cavern exit at mile marker 132.
Other delays due to the project will continue into early fall.