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Rehabilitation of the SF Calawah River Bridge

by William J. Grabner, USDA Forest Service, Portland, OR, USA,



Document Type: Proceeding Paper

Part of: Bridges and Transmission Line Structures

Abstract:

The failure of a 4-span reinforced concrete bridge in Washington State initiated a study that ultimately led to a unique method of bridge rehabilitation. Severe scour resulted in settlement of the center pier and major damage to the two adjacent spans. In lieu of bridge replacement, a single steel span was used to replace the two damaged concrete spans. Rehabilitation work also included restoration of foundation material at one other pier and post-tensioning of the original concrete end spans to accommodate the altered forces of the new 'hybrid' structure.

Subject Headings: Concrete bridges | Reinforced concrete | Maintenance and operation | Bridge management | Bridge foundations | Rehabilitation | Infrastructure construction | Washington | United States

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