In Belmont County, the final work at the Aetna and Hanover Street intersections along Route 7 in Martins Ferry will start Tuesday.
Crews will be putting in new traffic signals.
Throughout the day — police will help to move traffic throughout the area — but there may be some lane closures to remove the old signal equipment.
Drivers are being urged to plan ahead and to avoid delays.
The work is expected to be completed on August 19th.