Construction Progress Report No. 7: Five-in-One Bridge and Dam Structure in Cedar Rapids of Linn County, Iowa, March 8, 1974

(1974) Construction Progress Report No. 7: Five-in-One Bridge and Dam Structure in Cedar Rapids of Linn County, Iowa, March 8, 1974. Transportation, Department of

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Abstract

This is the last in a series of quarterly reports issued for the Iowa Department of Transportation on the construction progress of the Five-In-One Bridge and Dam located in Cedar Rapids, Iowa. Construction of the project began in November 1975. It was originally scheduled for completion by July 1978; however, the contractor progressed at a faster rate than anticipated, and the project is now essentially complete. The upper level of the structure consists of an eight-lane bridge to carry Interstate 380 traffic across the Cedar River. The middle level roadway serves as both a replacement for the deteriorated F Avenue Bridge, located immediately upstream from the site, and a new river crossing for E Avenue. The lower level of the structure, a 680-foot long dam with ten intermediate flood control gates, replaces an existing but deteriorated dam located a short distance upstream. The new dam consists of four submergible taintor gates and six vertical lift gates. The only major remaining item of work is to complete installation of the electrical power circuits, contr61 circuits, and control equipment necessary to operate the ten dam gates.