Project Description

Project Role & Details

Client: Norfolk Southern Railroad
Location: Pittsburgh, PA

Project Construction Consultant on this major, historic railroad bridge crossing the Allegheny River in Pittsburgh, PA.. Client and owner of the bridge was Norfolk Southern Railroad.  This 18 span bridge crosses the Allegheny river just below a Corp of Engineers lock & dam facility.  As a result of a pool operation modification made by the Corps., the bridge structure needed to be raised 3 feet vertically.  Mr. Beier designed and coordinated construction methods, phasing, and staging plans to change out 18 spans of this existing bridge while rehabilitating the existing bridge pier structures to increase the vertical clearance by the required 3 feet.  Span removal and replacement was to be done using river barges to “float in and out” the new and existing spans.  During the proposed bridge modifications, the railroad would allow only limited working time windows when rail traffic could be halted, typically 20 hours.  At the end of the window, freight trains would need to be running on the bridge.  Extensive coordination was required between rail operations, the Corps of Engineers, adjacent railroads, and utilities using the bridge as a river crossing.

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