WSDOT tries a ‘bridge-in-a-backpack’ in Duvall as an innovative way to replace fish-blocking culverts

Composite fibers, best known as a lightweight material in Boeing airplanes, are being tried out as a bridge material in Duvall, where crews assembled a 51-foot-bridge to replace a concrete pipe that blocked fish passage. It's an experiment that may help WSDOT deal with court orders to reopen salmon streams blocked by highways. Source: Seattle Times - Traffic Permalink: WSDOT tries a ‘bridge-in-a-backpack’ in Duvall as an innovative way to replace fish-blocking culverts

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