Washington County, Pennsylvania
Canonsburg, Pennsylvania
SAI was responsible for the Preliminary Engineering, Final Design and Construction Consultation.
Physical Features:
- Consists of a 164′-0″ two-span structure with weathering steel plate girders supported on integral abutments and a drilled shaft center pier. The bridge width was increased to two 10′-0″ lanes, a 4′-0″ right shoulder, and a 9′-0″ left shoulder that includes an additional 5′-0″ for a future sidewalk.
- Replaced a unique 20′-0″ wide, 140′-0″ long, three-span concrete thru-girder structure constructed in 1943.
- Approximately 1300′ of roadway approach and 400′ of widened causeway across the lake.
- Constructed 500′ of new lake access.
Other Features:
- Carries McDowell Lane (Township Road T-717) over Canonsburg Lake (Little Chartiers Creek) in Washington County, PA
- The lake is owned by the Pennsylvania Fish and Boat Commission (PAFBC).
- Provided aesthetic treatment to the exposed concrete barriers.
- Required a Bald Eagle monitoring program and permit.
- Construction was limited by trout stocking restrictions.
- Improved pedestrian and bicycle connectivity with widened bridge.
- Required deep water construction techniques and fill under water.
- Replaced drainage system.
- Complex staged demolition for existing structure.
- Partnering with townships to include roadway preservation with this project to reduce costs.
- Partnering with the PAFBC to rehabilitate one parking lot, provide lake access for the physically impaired, and improved lake access.
Client Owner: Washington County Planning Commission
Completion: 2021
Construction Cost: $3,000,000 |
