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Life-Cycle Engineering Services | EXPANDED

Modjeski and Masters is pleased to announce the acquisition of structural engineering firm Summit Engineering Group, Inc. Our combined engineering prowess and respective technical skillsets will enable us to provide streamlined design and construction solutions to best meet client needs.

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Big Spring Road Bridge Replacement

| View Projects: Cumberland County, PA

  • Client:

    Pennsylvania Department of Transportation
  • Service:

    Medium and Short Span Bridges
  • Status:

  • Overview

    Bridging the many waterways in Cumberland County, PA has been a challenge for decades. Many of the existing bridges that were constructed in the early 20th century have begun to deteriorate. The Big Spring Road Bridge is no exception. Constructed in 1932, the short span bridge has served the community well during its lifetime, but years of use have necessitated a replacement.

    Trusted by the Pennsylvania Department of Transportation (PennDOT) to maintain their infrastructure, Modjeski and Masters was called upon to design a replacement bridge. As active partners, our knowledgeable staff worked with PennDOT, the Pennsylvania Fish and Boat Commission, local residence and other stakeholders to design a functional, low-impact replacement structure necessary for this High-Quality Spring. The proposed replacement structure is a two-lane, single-span pre-stressed spread box bridge along a similar alignment. Our technical experts developed a comprehensive solution to meet current engineering standards and improve safety. This includes widening the bridge to two 10 foot travel lanes and two 1.5 foot shoulders. The bridge will be skewed to the northwest to improve the alignment of the bridge with the existing roadway. The existing grade will also be raised approximately two feet from the existing profile.

    Construction on the Big Spring Road Bridge commenced in 2012. But reaching this point required Modjeski and Masters to be flexible, to work collaboratively with various stakeholders and local residents. We’ve been headquartered in Cumberland County, PA for nearly 40 years (and in the Central Pennsylvania area for nearly 90 years) which denotes a special connection with this project, our client, and the local community. We’re proud to be able to maintain the great bridges that connect these communities. It’s part of what drives us to stay committed beyond completion.
  • Description

    Tasks Performed
    • Replacement Structure – Design (Preliminary and Final)
    • Approach Highway Design
    • Structural Analysis

    Bridge Geometry
    • Length of Main Span – 56 feet
    • Total Project Length – 56 feet
    • Lanes on Structure – Two lanes
  • Testimonial

    Our technical experts developed a comprehensive solution to meet current engineering standards and improve safety.
  • Credits

    Todd B. McMeans, PE (Principal-In-Charge)
    Chad M. Clancy, PE (Project Manager)
    Thomas P. Lavin, PE (Lead Highway Engineer)