• Project

I-405/Ripley Lane Stream Connection Project

Project overview

The Ripley Lane Stream Connection Project is part of a series of fish barrier corrections planned by WSDOT for the I-405/SR 167 corridor. The Ripley Lane Stream Connection Project will construct new stream channels by combining two culverts into one open channel. We determined that the proposed concept would restore full fish access to Lake Washington for both streams and improve nearshore habitat. The project will also provide the necessary water flow capacity downstream to allow removal of the flow restrictor installed during the Renton to Bellevue Project. This proposed concept will also avoid displacing people from their homes, will minimize property acquisitions and will reduce long-term maintenance concerns.

The project is currently in the design and environmental stages. We anticipate construction will be complete by 2025.
Project status
Approximately $10 million
Project hotline

What to expect

This project will consist of construction on Ripley Lane in Renton near the King County Eastrail trestle. Residents on Ripley Lane in this area may be impacted by noise during construction. Two properties on Ripley Lane will be more heavily impacted as the current stream outfalls between the two houses. The future culvert will be constructed west of the current culvert and will outlet to Lake Washington between two private residences.

The Ripley Lane Stream Connection Project area is near the northern border of the City of Renton, less than half a mile north of the I-405/Northeast 44th Street interchange.