Beaver River Bridge – Pennsylvania
Corven Engineering, Inc. is a national leader in the design, construction engineering, inspection and rehabilitation of prestressed concrete bridges. The firm has special capabilities with regard to post-tensioned concrete bridges, with an emphasis on precast and cast-in-place segmental concrete bridges.
This IDS client provides technically appropriate and high quality services from concept, to completion, and throughout the life of a bridge.
John Corven (Principal of the firm) says: “Our goal is to optimize human and natural resources through designs that embrace form following function with inherently high durability. We organize our work in four core areas: Design, Construction Engineering, Inspection and Rehabilitation, and Technology Development.”
Corven Engineering uses has used the Bridge Designer software for close to two decades. They perform long term construction analysis with both the 2D and 3D versions of the software. They also provide bridge construction engineering services and have selected the MC3D geometry control software for short-cell match-casting on many of their segmental bridge projects. An example is the Beaver River Bridge in Pennsylvania:
General Description: The Beaver River Bridge carries the PA Turnpike Mainline over the Beaver River, CSX rail line, and Norfolk Southern rail line in Beaver County, Pennsylvania. The project consists of two new parallel cast-in-place segmental bridges that will replace a steel deck truss bridge built in 1953. The new eastbound and westbound bridges will each carry three 12’ travel lanes, one 12’acceleration/deceleration lane, and appropriate shoulders.
Key Features: The new eastbound and westbound bridges will be 1,645’ in length, and will feature 385’ spans. The concrete box girder superstructures for each bridge will be 73’-4½” wide and vary in depth from 10’ at mid-span to 21’ at the piers. Pier heights will reach nearly 200’, and will be comprised of solid base pedestals, transitioning to twin wall piers to enhance flexibility and constructability. The segmental box girder superstructures will be built in balanced cantilever using self-advancing form travelers.
Corven Engineering Role: Corven Engineering performed preliminary engineering analyses, designs, and cost estimates for several segmental bridge alternates. They are preforming the final analyses and designs of the alternate selected by the PA Turnpike.
Bridge Designer™ (2D and 3D) is being used to analyze this bridge. The models include the variable depth geometry of the superstructure and monolithic connections to the supporting twin-wall piers.