• Bridge inspections under way nationwide

    State highway departments nationwide are scrambling to inspect all their steel deck truss roadway bridges in the wake of the tragic I-35W bridge collapse in Minnesota last week
    Aug. 6, 2007
    2 min read

    State highway departments nationwide are scrambling to inspect all their steel deck truss roadway bridges in the wake of the tragic I-35W bridge collapse in Minnesota last week.

    “We will be re-inspecting all truss deck bridges rather than limiting our review to the 30 bridges originally identified as being similar in design to the one that tragically collapsed in Minneapolis,” said Allen Biehler, Pennsylvania’s transportation secretary.

    He said the Pennsylvania Dept.of Transportation (PennDOT) plans to re-inspect all 54 steel deck truss bridges throughout the state by the end of November with an in-house team of more than 100 bridge inspectors, aided by contract experts from several civil engineering firms. Initial estimates are the effort is expected to cost roughly $2 million, Biehler noted.

    Similar re-inspection efforts are gearing up across the country – in Nebraska, Iowa, Massachusetts, and many other states – simply because so many highway bridges are in bad shape, according to the American Road and Transportation Builders Association (ARTBA).

    Of the 594,709 bridges in the U.S., about 152,945 or 26% are structurally deficient or functionally obsolete, according to data ARTBA gleaned from a 2006 Federal Highway Administration (FHWA) study.

    “Structurally deficient means that significant load-carrying elements of the bridge are found to be in poor or worse condition due to deterioration and/or damage,” said Pete Ruane, ARTBA president & CEO.

    “Functionally obsolete bridges result from changes in traffic demand on the structure. For example, a bridge designed in the 1930s would have shoulder widths in conformance with the design standards of the 1930s,” he said. “However, design standards may have changed since that time, so the difference between the current required shoulder width and the 1930s standard represents a deficiency.”

    Aside from the near-term need for bridge inspections, Ruane stressed that better long-term strategic funding is necessary to prevent the national highway system – bridges and roads alike – from major deterioration. He pointed to a recently released forecast of Highway Trust Fund revenues showing a shortfall that could result in a $16 billion cut in federal highway investment to the states beginning in FY 2009. Compounding the problem, he said, are construction costs that have gone up over 30% in the past three years.

    “America also needs a bold and visionary long-term plan—led by the federal government—that strategically focuses on meeting future national transportation needs, such as U.S. global competitiveness and efficient freight movement,” Ruane added.

    About the Author

    Sean Kilcarr

    Editor in Chief

    Sean Kilcarr is a former longtime FleetOwner senior editor who wrote for the publication from 2000 to 2018. He served as editor-in-chief from 2017 to 2018.

     

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