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Title: RESEARCH PAYS OFF. HYDRAULIC MODEL DETERMINES COST-EFFECTIVE FLOOD MITIGATION
Accession Number: 00473081
Record Type: Component
Availability: Find a library where document is available Abstract: The article describes how a computerized model developed by FHWA-sponsored research was used to analyze flood profiles in the Pearl River basin in Louisiana. The basin has experienced a flood-of-record 3 times between 1979 and 1983, and citizens were demanding corrective action to mitigate flood-damage. The Lousiana Department of Transportation and Development was faced with the following issues: how many bridges, how large, where to locate them, and what should be the appropriate basis for structural modifications to a highway facility by an agency with funds allocated primarily for transportation purposes and not for flood control. The model uses a finite element grid to permit a horizontal, 2-dimensional analysis of flow through the flood plain and its constrictions. The analytical model was calibrated against recorded data and used to evaluate various combinations of both structural and nonstructural mitigations. The model was also used to evaluate alternative mitigations in the lower highway system. Louisiana DOTD is now proceeding with plans for construction of an additional 1,000-ft bridge opening on I-10 and an additional 250-ft bridge opening on US-90-US-190. The estimated savings may be between $5 and $10 million. The model is being used by other state highway agencies as well.
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Pagination: p. 16-17
Publication Date: 1987-7
Serial: TRT Terms: Uncontrolled Terms: Subject Areas: Administration and Management; Bridges and other structures; Highways; Hydraulics and Hydrology; Research; I10: Economics and Administration
Files: TRIS, TRB
Created Date: Sep 30 1987 12:00AM
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