I-76 Allegheny River Bridge, Oakmont, Pennsylvania

SEGMENTS, SPRING 2010, VOL. 55

The eastbound lanes of the new Allegheny River Bridge (Fig. 7) opened to traffic on October 25, 2009. As Pennsylvania’s first concrete segmental bridge to be built using balanced cantilever methods, the bridge will also hold the record for the state’s longest concrete segmental span at 532'.

Designed by FIGG and being built by Walsh, the new 2,350' twin structures will accomplish the Pennsylvania Turnpike Commission’s goals of a safer, more pleasing experience for customers. Long, open spans and construction from above create an environment friendly bridge that preserves river habitats and archaeological areas below the bridge while also keeping river, rail and vehicular traffic moving. Completion of the westbound bridge is anticipated this fall.

Project Details

State:

Pennsylvania
 

Designer:

 

Owner:

Pennsylvania Turnpike Commission
 

Contractor:

Walsh Construction
 

Construction Engineer:

T.Y. Lin International
 

Construction Engineering Inspection:

McTish with FIGG
 

Form Travelers for Cast-in-Place Segments:

 

Post-Tensioning Materials:

 

Stay Cables:

 

Epoxy Supplier:

 

Prepackaged Grout:

 

Bridge Resources