SR 900 - Green Creek - Remove Fish Barrier - Completed August 2017

We installed a 16-by-10-foot culvert under SR 900 to replace the old 4- by 3-foot culvert and built a more natural stream bed to make it easier for fish to move up and downstream. The old narrow culvert funneled the water under the highway at a high rate of speed, which made it hard for fish to pass through it. Crews also rebuilt the shoulders of SR 900 near the creek and replaced the old guardrails.

The Green Creek culvert is one of nearly 1,000 such structures subject to a 2013 U.S. District Court ruling that the state must remove culverts that block fish passage under state roads to restore historical tribal fishing rights.


How you benefit

Improves safety
Rebuilding the shoulders provides a more stable base for the new guardrail, reducing the chances a vehicle could go down a 25-foot embankment near the creek.

Protects environment
The wider opening of the new culvert will increase the fish habitat and help sockeye and coho salmon, steelhead, sea run cutthroat and resident trout travel Green Creek by slowing the water flow.


This project was funded with about $1.8 million in Pre-Existing Funds.


Contact us
Northwest Region communications
15700 Dayton Avenue North
Seattle, WA 98133