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Project Title & Location
Lewis and Clark Bridge 433/1 Deck Replacement
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Project Description
Replace the existing bridge deck of the Lewis and Clark Bridge, Number 433/1. Construction of the deck replacement stage of this project began in January, 2003. Half of the funding for this project is contributed by Oregon Department of Transportation. This project is constructed simultaneously with the navigational light system project, the seismic retrofit project, and the interim painting project.
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Recent Progress
A total of 52 of 103 deck replacement panels have been installed on the bridge, constituting 2,090 feet of new roadway deck. A total of 72 of 103 panels have been constructed. Other work includes extending floor beams (44 of 44 completed) and constructing all 44 approach widening sections. Approximately 1,500 feet of curb and handrail have been removed in preparation for installing 23 widening sections, 17 to date.
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Design Construction Impacts
Raising the Oregon end of the bridge by one foot was recently scheduled for a December weekend. After discussion with the local communities, this second of four weekend closures was postponed until after the New Year, to better accommodate civic activities and holiday travel. Additional funds of $2.78 million have been requested for additional work to the stringer-to-floorbeam connections that was not anticipated prior to construction.
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Environmental Impacts / Compliance
Silt fences capture sediments from runoff to avoid impacts to the river, as outlined in the Temporary Erosion and Sediment Control Plan. The contractor is implementing a containment plan to ensure lead from deck removal is not released into the environment. A Peregrine Falcon Management Plan helped to avoid potential, adverse impacts from construction during the nesting activity, which ended last quarter.
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Impacts to Traffic
Single lane and total bridge closures typically occur from 9:30 pm to 5:30 am. Traffic delays during single lane closures are limited to 20 minutes. During full weekend closures, the bridge is closed from 11pm Friday to 5:30 am Monday. During weeknight and weekend total bridge closures, the Puget Island Ferry operates free of charge to the traveling public. The closest detours are the SR 101 bridge in Astoria, or I-405 bridge in Portland.
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