DESCRIPTION
This proposed project will build on the conceptual design alternatives presented by PSNERP by developing a preliminary 30% design. Replace the existing North Shore Road Bridge over the Tahuya River to restore normative tidal exchange, sediment and debris transport, and reconnect a historic distributary system. This project involves removing the existing 123 foot span bridge, removing fill material from within the tidal prism, installing a longer bridge to span the estuary, and revegetating fill removal areas. The project team will also investigate the feasibility of reconnecting a historic distributary channel system, and other identified habitat improvement elements as they are identified during the design process. Preliminary design development involves: topographic survey, geotechnical boring and analysis, structural engineering, civil/hydraulic engineering, cultural resource investigation, environmental research, landowner outreach, and project stakeholder coordination.
During the funding period of this project HCSEG worked with landowners, stakeholders, and a consultant to provide these project deliverables:
1. Ecological Benefits Assessment (EBA) of the potential Tahuya River Bridge Replacement
2 Feasibility Study.
The EBA was informed by the PSNERP conceptual design alternatives for restoration of the Tahuy a River Estuary completed in 2016 and the Tahuya River Watershed Assessment completed in 2020. The Feasibility Study documents feedback from local stakeholders and community landowners in order to determine interest and/or concerns related to the potential restoration efforts in the Tahuya River estuary.
