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The ABC Method: Replacement of a Multi-Span Bridge Over the Snake River

9-03-2019

Photo courtesy of Idaho Transportation Department.

By Shane Brown, PE, SE

The 19-span, 615-foot long precast concrete stringer bridge over the Snake River in Bruneau, Idaho was deteriorating and in need of replacement. Not only did the bridge need to be replaced within one year, but traffic flow needed to be maintained during construction. In addition, work would take place over the environmentally sensitive Snake River.

Photo courtesy of Idaho Transportation Department.

Parametrix was contracted by the Idaho Transportation Department to provide structural engineering services during construction. To meet the challenging project conditions, several innovative methods were used, including accelerated bridge construction (also known as t... (more)