IH-70 Ramp A
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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back buttonMedium and Short Span Bridges

Well Road Overpass Accelerated Bridge Construction

Previous Project | West Monroe, LA

  • Client:

    Louisiana Department of Transportation and Development
  • Service:

    Medium and Short Span Bridges
  • Status:

  • Overview

    YouTube Clip: Preserving the Flow

    With urban expansion, traffic on the vital Well Road overpass has steadily increased, necessitating a replacement. LADOTD looked to a trusted partner in Modjeski and Masters to design a replacement.

    M&M provided preliminary and final design services for the replacement of the entire I-20 overpass superstructure using accelerated construction methods. To eliminate long-term construction and closures on the overpass, our innovative solution resulted in an abbreviated construction phase – a single weekend. Prior to the change-out, the new replacement spans were erected on-site at a staging area within the interchange. In addition, substructure units were strengthened while the existing superstructure remained opened to traffic. Next, self-propelled modular transporters (SPMTs) were utilized to remove the old spans and roll-in the new spans. During the weekend lane closure period, interstate traffic was routed through the interchange ramps. M&M also provided traffic control plans, special provisions, and LRFR rating of the structure.

    This was the first time that SPMTs were specified during the design of a bridge replacement project for the LADOTD. Despite inclement weather, the project was successfully completed one day ahead of schedule.
  • Description

    Tasks Performed
    • Bridge Replacement – Design (Preliminary and Final)
    • LRFR Rating
    • Construction Support

    Bridge Description
    • Span Lengths – 55 to 85 feet
    • Total Project Length – 262 feet
    • Lanes on Structure – Two lanes
  • Testimonial

    “This is the first time we’ve done [accelerated construction] of this magnitude, but I think we’re going to do more.” - David Hodnett, Engineer for Louisiana Department of Transportation and Development
  • Credits

    Dr. Zolan Prucz, PE (Project Principal)
    David Petermeier, PE, SE (Project Manager)
    Cullen Ledet, PE (Design Engineer)
    Rachel Mertz, PE, SE (Design Engineer)