Washington and Westmoreland Counties, Pennsylvania
Project Manager: Raymond Henney, PE
Phone: 412.392.8788
Cost: $26,100,000
Completion Date: 2013
SAI was responsible for designing the 1,011’ bridge with a 485’ main span over the Monongahela River via Design-Build delivery. SAI’s efficient steel design, along with JB Fay’s means and methods, resulted in a winning bid on the project – a full $3 million below the second bidder.
Steel Erection
River Pier Cofferdam
The physical features of this project include:
- 1,011′ three-span continuous haunched steel plate girder structures with a maximum span of 485’.
- The divided bridge deck consists of two 12’ lanes, two 4’ shoulders and a 5’ sidewalk
- The structure consists of three spans with the main span over the navigation clearance envelope and the last span over 5 sets of railroad tracks
- Substructure consists of hammerhead piers with stained architectural block treatment
Other features of this project include:
- Design to allow for pedestrian deflection on long span structure
- Designed haunched steel girder for shipping to minimize design build pricing
- Provide girder haunch to allow for 23 ft clearance over 5 railroad tracks
- Girders include longitudinal stiffeners and transverse stiffeners and lateral bracing
- Splices utilized 1” diameter bolts
- Refined analysis for camber and deck pour sequence
- Foundation design for footings on caissons with scour
- Design of 30ft tall cofferdam in major river on rock
Project Owner: Pennsylvania Department of Transportation, District 12-0
Client: Joseph B. Fay
Contact: Mike Trettel