2012 Tulane Engineering Forum School of Science and Engineering
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Dave Becher

Dave Becher

SR 520 Program Director of Construction

Dave Becher’s role leading construction across several major SR 520 projects requires him to oversee the design-build contractor that is responsible for transporting massive pontoons onto Lake Washington, building other precast elements such as anchors and roadway sections, and assembling the new bridge on the lake, as well as demolishing the old bridge. Dave also oversees construction of improvements west of the floating bridge in Seattle, including installation of over a mile of new fixed in-water highway structure. Dave was recently named one of Engineering News-Record’s “Top 25 Newsmakers of the Year” in the country, a significant nationwide honor and recognition of his work.

Presentation Description

The new SR 520 Evergreen Point Floating Bridge across Lake Washington near Seattle, Washington is the longest floating bridge in the world. SR 520 is a vital transportation link across the north end of Lake Washington. It connects Seattle to the Eastside communities and is a vital economic driver for the Puget Sound area. The new floating bridge replaces a bridge build in the early 1960s which was vulnerable to wind and wave action, the fixed bridge approaches were vulnerable to seismic events, and the bridge was functionally obsolete for the traffic volumes utilizing the bridge. This presentation will discuss the design and construction challenges associated with building a billion dollar bridge across Lake Washington.

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