- Friday, May 31 to Friday, June 21 - Both directions of 180th Avenue S.E. on the west side of SR 9 will be closed around-the-clock from 7 p.m. Friday, May 31 to 5 a.m. Friday, June 21. The road will be closed between SR 9 and Snohomish Avenue. Local access will be maintained. Drivers will be detoured via 176th Avenue S.E. or 188th Avenue S.E./Alder Street.
- Traffic has been shifted to the new southbound lanes on the west side of the highway. Two-way traffic will remain in place while crews work on improvements in the northbound lane.
- Our weekly construction schedule provides updates on work for the current and upcoming week.
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We are widening more than two miles of State Route 9 from a two-lane road to a four-lane divided highway from SR 524 north of Bothell to 176th St SE in the community of Clearview.
Why is WSDOT
widening SR 9 from north of Bothell to Clearview?
Rapid population growth in Snohomish County has increased traffic on SR 9. The highway is now an important corridor for both commercial vehicles and commuters. Current traffic volumes have exceeded the capacity of the two-lane roadway leading to congestion and delay during peak travel times.
Congrestion-related collisions - like sideswipe and rear-end collisions - have also increased along SR 9. From 2000 to 2003, there were an average of 395 collisions per year on SR 9 in Snohomish County. Between 2004 and 2007, that average had increased to almost 480 collisions per year.
The End Result
We will double the number of through lanes on SR 9 and provide additional turn lanes at the 180th St SE intersection. We will also add a raised median to separate oncoming traffic and limit access points for turning drivers. These improvements will provide better driving conditions and improve safety on the highway.
• Safety. To reduce the risk of serious collisions, we will add a raised median to most of this segment of SR 9. Raised medians work by eliminating left turns across oncoming traffic at access points on busy roads. Controlling where traffic can go minimizes the conflicts that lead to collisions. We will also bring this stretch of highway up to the most current safety standards for intersections, guardrail, pavement marking and elimination of roadside hazards.
• Congestion relief. We will improve capacity and traffic flow by adding two lanes to the existing roadway. The raised median will also help reduce the congestion that results from frequent and closely-spaced driveways and side streets on busy highways.
What is the project timeline?
Feb. 7, 2008 - Open house at Horseshoe Grange in Snohomish
Sept. 23, 2009 - Open house at Valley View Middle School in Snohomish
Oct. 27, 2010 - Open house at Valley View Middle School in Snohomish
April 18, 2011 - Advertised for competitive bidding
June 23, 2011 - Project awarded to Northwest Construction, Inc., for $24.2 million
Aug. 8, 2011 - Begin construction
Fall 2013 - Finish construction
Project signage will reflect the cost of construction engineering, project bid award and sales tax.
|Financial Data for PIN 100900F
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
How can I get more information?
15700 Dayton Avenue North
Seattle, WA 98133
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