The State Highway Administration will begin overnight closings and detours on Md. 77 starting Wednesday to repair more than 40 aging culverts.
Md. 77 between Pryor Road and Stottlemyer Road will be closed Sunday nights through Friday mornings, from 7 p.m. through 6 a.m. until early fall, according to an SHA news release.
Detours will take drivers from Md. 77 to U.S. 15 to Md. 550 to Foxville Deerfield Road and back to Md. 77.
Single lanes will be closed Mondays through Fridays between 8 a.m. and 4 p.m.
The $2.1 million project is expected to be finished by summer 2020.
The road was previously closed for nearly a month in May for culvert work.
On Friday, workers will temporarily close and establish a detour for the bridge on Md. 28 over the Monocacy River through 5 a.m. Monday.
Afterward, traffic over the bridge will return to being controlled by temporary traffic signals.
The detour will use Md. 109, Md. 355, Md. 80 and Md. 85.