Specifications include, but are not limited to: Replace the existing roadway crossing on Berwick Creek at Logan Hill Road Milepost (MP) 0.103, to improve fish habitat and stream function. PBS Engineering and Environmental Inc. (PBS) was retained by the County to provide engineering services for replacement of the crossing. Northwest Hydraulic Consultants (NHC) was contracted by PBS as a sub-consultant to provide specialized geomorphic, hydrologic, and hydraulic services, as well as assist in developing the conceptual designs following Washington Department of Fish and Wildlife’s (WDFW) Water Crossing Design Guidelines (WCDG) (Barnard et al. 2013) and WAC 220-660-190. This report documents findings of the existing conditions assessment, hydraulic analysis, and conceptual design conducted by NHC for the Logan Hill Road crossing of Berwick Creek.
