Design Build Structure Replacement with Accelerated Bridge Construction (ABC)
Moon Township
Allegheny County, Pennsylvania
Project Manager: Jason DeFlitch, PE
Phone: 412.392.8258
Cost: $3,600,000
Completion Date: 2019
SAI was responsible for the Design-Build Structure Plans, Traffic Control Plan and Signing & Pavement Marking Plan for a bridge replacement on SR 0051 (Stoops Ferry Road) that traverses over Flaugherty Run.
The physical features of this project include:
- Removal of an existing single span reinforced concrete frame bridge with a sidewalk on one side.
- Replacement was a new single span pre-stressed concrete spread box beam bridge with a sidewalk on one side.
- Structure utilized prestressed concrete box beam modules delivered to the site with the deck attached. An Ultra High Performance Concrete (UHPC) joint was then constructed between modules.
- The concrete spread box beam bridge was 57’-8” (out/out) and maintained three (3) 11-0’ travel lanes, two 8’-0” shoulders, and a 5’-8” sidewalk on one side.
The substructures were integral abutments utilizing precast pile caps connected via UHPC joints for phased construction.
Other features of this project include:
- The Design-Build traffic Control Plan consisted of six (6) phases of construction.
- A car and truck detour plan was also part of the Design-Build plan.
- The detours were implemented over a weekend to launch the bridge in place.
- Utility relocation was a critical path to the success of accelerating the project.
Looking over New Structure Toward Adjacent Intersection
New structure with UHPC Joints
Project Owner: Pennsylvania Department of Transportation, District 11-0
Client: JB Fay Company
Contact: Ryan Surrena (FAY, S&B USA Construction)
Phone: 724.265.4600