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September 27, 2018

Why are bridges green? The story starts in Oregon with two famous engineers

  • In the early days, almost all bridges were painted black or gray.
    Oregon Public Radio

    Photo from AGC of America/Hamilton Construction [enlarge]
    Hamilton Construction Co. in 2013 finished a six-year rehab of the south approach of the US 101 Conde McCullough Memorial Bridge in North Bend, Ore. Its steel trusses are painted ODOT Green.

    PORTLAND — Drive across Oregon and it's hard not to notice that many of the state's steel bridges — from the foggy coast to high desert — are the same shade of sage green. It's so ubiquitous that the paint's manufacturer calls it “ODOT Green” after Oregon's Department of Transportation.

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