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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George Washington Bridge Suspension System Rehabilitation

| View Projects:USA New York, NY & Fort Lee, NJ

  • Client:

    Port Authority of New York and New Jersey
  • Service:

    Suspension Bridges
  • Status:

    In Progress
  • Overview

    As busy bridges go, the George Washington Bridge takes the crown as the world’s busiest. In 2008, this vital link between New York and New Jersey carried 53,000,000 vehicles eastbound into Manhattan alone. The “GW” holds another distinction: it’s the only 14-lane suspension bridge in the world. With 4,760 ft. of double-decked suspension spans, that’s a lot of bridge to maintain. As a critical component to sustaining the economic powerhouse of Manhattan Island, this iconic suspension bridge can never rest. So when the Port Authority needed someone they could trust to provide lifecycle services for their highly visible landmark, they turned to their number one bridge consultant - Modjeski and Masters.
    Our firm’s experienced engineers are currently evaluating the suspension system of the George Washington Bridge. As part of the Ammann & Whitney Team, Modjeski and Masters is providing design, construction engineering, and field support for a detailed investigation to preserve the structural integrity of each of GW’s four 36-inch diameter main cables. Our responsibilities include wedging and inspection of the cable wires, splice repairs, and material testing of samples. In addition, Modjeski and Masters will work with the Port Authority to replace all suspender ropes within the next 10 to 15 years.
    The world’s busiest bridge keeps us busy in a number of other ways. Our expertise was needed to perform a value engineering and constructability review of a proposed scheme to rehabilitate the upper level orthotropic deck and superstructure steel. And Modjeski and Masters recently conducted a seismic analysis and retrofit design of the upper and lower level expressways, including the 178th street, 179th street, and lower level ramps.
    As an active partner, Modjeski and Masters understands the many challenges of the Port Authority’s infrastructure: To ensure that service on the bridge isn’t interrupted; to consider stakeholder concerns; and to always be aware that modern threats to security are a reality. That kind of trust demands the level of integrity and commitment that’s been a Modjeski and Masters trademark since our inception. Lifecycle services for such bridges like the George Washington Bridge require personally invested engineers. It’s what we do best – we help construct and maintain great bridges.
  • Description

    Tasks Performed
    • Asset Management
    • Bridge Security
    • Construction Support & Inspection
    • Rehabilitation – Design (Preliminary & Final)
    • Redecking
    • Seismic Analysis & Retrofit
    • Structural Analysis
    • Suspender Rope Investigation
    • Suspension Cable Investigation
    • Value Engineering
    • Vulnerability Assessment
    Bridge Geometry 
    • Length of Main Span – 3500 feet
    • Total Project Length – 4760 feet
    • Lanes on Structure – 14 lanes
  • Testimonial

    Modjeski and Masters is pleased to work with Ammann & Whitney on this project to rehabilitate the suspension system on this two-level, fourteen lane suspension bridge.
  • Credits

    Dr. Barney T. Martin, PE (Principal In Charge/Project Manager)
    Dr. John M. Kulicki, PE (Technical Advisor)
    Dr. Wagdy G. Wassef, PE (Technical Advisor)
    Michael J. Borzok, PE (Technical Advisor)
    Dr. Thomas P. Murphy, PE (Analysis Engineer)
    Dr. Phillip A. Ritchie, PE (Analysis Engineer)
    Martin J. Smith, PE (Project Engineer)
    Daniel B. Irwin, PE (Project Engineer)