- This project is scheduled to be advertised for competitive bidding in March 2017.
- Construction is scheduled to begin in summer 2017.
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Contractor crews will replace a box culvert on Great Dane Creek under State Route 524/Maltby Road near Maltby and rebuild the nearby streambed to provide a clearer passage for fish like salmon and steelhead.
Why is WSDOT
replacing the culvert under SR 524 at Great Dane Creek?
Great Dane Creek passes through a 4-foot wide culvert under SR 524 just west of State Route 9/Woodinville-Snohomish Road. The narrow passage increases the speed of water through the culvert, creating a partial barrier for fish attempting to swim the creek. The new culvert will measure 19 feet wide, 8 feet tall and 35 feet long.
Four-day full closure
In addition to overnight single-lane closures with alternating traffic, crews will need a four-day full closure of SR 524 at Great Dane Creek to install the new culvert. A detour will be set up on local roads to maintain traffic around the construction area. This stretch of SR 524 carries about 11,000 vehicles a day.
Fish barrier removal program
The Great Dane Creek culvert is one of more than 1,000 culverts 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.
The End Result
A larger culvert under SR 524 will improve fish passage and habitat in Great Dane Creek. It will also help WSDOT meet a federal court-ordered requirement to remove state-owned culverts that block fish passage.
- Environment: Replacing the culvert and rebuilding the streambed will:
- Improve fish passage.
- Create a more inviting habitat for wildlife.
- Open up an additional 4.5 miles of habitat for salmon and steelhead on Great Dane Creek.
- Help restore historical fish migration patterns and tribal fishing rights.
- Allow other wildlife to also safely cross under SR 524.
- Compliance: The project helps WSDOT comply with the U.S. District Court ruling regarding fish passage.
What is the project timeline?
- March 2017: Project is scheduled to be advertised for competitive bidding.
- Summer 2017: Construction is scheduled to begin.
- Fall 2017: Construction is scheduled to be complete.
|Financial Data for PIN 152412D
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
Project signage will reflect the cost of construction engineering, project bid award and sales tax.
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