Please note: South Fayette Township is not directly involved with this project but will share updates from PennDOT as they are available.
Starting in mid-February, a temporary, one-lane bridge with traffic lights will open adjacent to the closed Dolphin Run bridge on Millers Run Road. In addition, Mohawk Road will close at its intersection with Millers Run Road.
The Pennsylvania Department of Transportation (PennDOT) is installing a temporary one-lane bridge over Dolphin Run on Millers Run Road, near its intersection with Battle Ridge Road, in South Fayette Township.
The temporary bridge is expected to open in mid-February. Temporary traffic lights will control one-lane, alternating traffic over the bridge. Speed limit in the area will be 10 MPH.
The temporary bridge will be adjacent to the Dolphin Run bridge on Millers Run Road that is closed due to advanced structural deterioration.
Mohawk Road will be closed to traffic at its intersection with Millers Run Road until the permanent bridge is installed--a project expected to take approximately 18 months to two years.
Local traffic will be able to access Mohawk Road from Battle Ridge Road only.
In addition to the placement of the temporary bridge, other work includes utility relocation, temporary traffic signal installation, paving and line striping. Crews from Jet Excavating Company will conduct the work.
The detour will be lifted for standard motorists. The temporary structure will not be weight-posted; however, the truck detour will remain in place.
Posted Truck Detour, West of the Bridge :
East of the Bridge: Same detour in reverse
Original Closure Notice (12/23/22):
The Dolphin Run bridge on Millers Run Road (Route 978) in South Fayette, in the Cuddy neighborhood between Mohawk Road and Battle Ridge Road, is being immediately closed due to bridge deterioration, PennDOT District 11 announced Dec. 23, 2022. An inspection of the bridge found advanced deterioration of the structure and required an immediate closure. The bridge will remain closed until further notice, and all traffic will be detoured.