The City of Estevan is doing pavement maintenance on the 1300 block of 4th Street Monday.
That section of road is closed to traffic from both directions for the duration of the project.
City Safety Coordinator Helen Fornwald said Westbound traffic is being rerouted to 3rd Street, eastbound traffic is being diverted to 5th Street, and southbound traffic is being directed to 5th Street.
The speed limit in the area has been reduced to 30 kph.
Construction is expected to last until later in the afternoon.