Hydraulic and Stream Restoration. This task is for the hydraulic analysis and stream restoration to support the replacement of the bridge on this project. The hydraulic design will follow the requirements of the design standards: ▪ Applicable sections of the Cowlitz County Code ▪ Washington State Department of Transportation (WSDOT) Hydraulics Manual ▪ HEC-18, Evaluating Scour at Bridges (Fifth Edition)
Hydraulic and Stream Restoration. The Consultant will review the existing NHC report for the project and perform additional hydraulic analysis and stream restoration as necessitated based on the new selected preferred alternate. The hydraulic design will follow the requirements of the design standards: ▪ Applicable sections of the Lewis County Code. ▪ Washington State Department of Transportation (WSDOT) Hydraulics Manual. ▪ HEC-18, Evaluating Scour at Bridges (Fifth Edition).
