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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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John T. McNaughton Girder Bridge Rehabilitation

| View Projects:USA Pekin, IL

  • Client:

    Illinois Department of Transportation
  • Service:

    Medium and Short Span Bridges
  • Status:

  • Award Winner
  • Overview

    Orthotropic bridge decks are a bit of a dichotomy. Unlike conventional reinforced concrete bridge decks, steel plate with a thin protective wearing surface is used to bear the brunt of roadway traffic. But if the plate is designed too flexible, the protective surface may begin to crack, exposing the steel deck to water and other harmful agents. This was the case with the McNaughton Bridge. It was a common problem, but one with few instances of successful abatement. Determined to solve it, the Illinois Department of Transportation sought engineering innovation. They found it in Modjeski and Masters.
    An advanced state of corrosion had developed on the top of the McNaughton Bridge steel deck plate. To combat the problem, our technical experts performed an initial review and investigation of the long span girder bridge. This included an evaluation of replacement overlays for rehabilitation. Next, Modjeski and Masters identified a solution for final design. And not only would Modjeski and Masters’ solution be innovative, it would also be practical. The fix: to replace the deteriorating wearing surface with a layer of fiber-reinforced concrete. Fiber reinforcement improves concrete’s resistance to cracking and, therefore, minimizes water infiltration. Along with a layer of reinforcing bars, shear studs were used to unite the new layer with the existing steel deck plate. Construction of the new robust deck was completed in 2002, and continues to serve today, without the cracking.
    Modjeski and Masters’ application on the McNaughton Bridge is believed to be the first ever of its kind. And our award-winning solution for Outstanding Civil Engineering Achievement has since been applied elsewhere on other bridges. Exceeding client expectations and setting the standard for the rest of the industry to follow – hallmarks of Modjeski and Masters.
  • Description

    Task Performed
    • Rehabilitation – Design (Preliminary and Final)
    • Redecking
    • Structural Analysis
    • Fatigue/Fracture Studies
    • Load Capacity Rating
    • Rehabilitation Inspection

    Bridge Geometry
    • Main Span Length - 550 feet
    • Length Overall of Main River Bridge (3-span continuous 4-box girders @ 385’-550’-385’) - 1320 feet
  • Testimonial

    Winner of ASCE Central Illinois Section Outstanding Civil Engineering Achievement Award.
  • Credits

    Dr. John M. Kulicki, PE, SE (Principal In Charge)
    David W. Petermeier, PE, SE (Project Manager)
    Donald F. Sorgenfrei, PE (Technical Advisor)
    Yuen-Shuenn Siow, PE, SE (Project Engineer)