SCIENCETECH · HISTORICAL MARKER
The Bridge
Roosevelt, Arizona
· 1987-1990
Science & Tech
4
Before dam modifications could begin, a 21.3 million-dollar bridge was built to move traffic off the top of Roosevelt Dam. Roosevelt Lake Bridge is the longest two-lane, single-span, steel-arch bridge in North America. Spanning 1,080 feet across Roosevelt Lake, it was painted blue to blend with the lake and sky. Its design addressed porous limestone foundations, a narrow width-to-height ratio, and construction 300 feet above the water. The roadway was given an arch so it would not appear to sag to drivers. In November 1995, it was named one of the top twelve outstanding bridges in the nation, alongside the Golden Gate and Brooklyn bridges.
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Roosevelt, Arizona
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