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I-5 - SR 501 Ridgefield Interchange - Complete October 2012

Project Status - Complete

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The I-5/SR 501 interchange before the old bridge was demolished in October 2010

This project was constructed in two stages. Stage 1 began construction in 2009 and was complete in 2011. replaced the existing I-5 interchange at SR 501 in Ridgefield with a new bridge and improved on- and off-ramps. The project also widened SR 501 to two lanes in each direction, and added new turn lanes and sidewalks for pedestrian and bicycle travel along SR 501.

Construction on Stage 2 began in April 2012, and was complete in October 2012. Stage 2 built roundabouts and made other improvements to the SR 501/56th Place and Pioneer Street/65th Avenue intersections. Crews built additional sidewalks to connect to those built under Stage 1.

The new interchange improves traffic flow at the I-5/SR 501 connection and will accommodate future traffic growth while maintaining local access for drivers, pedestrians and bicycles. Drivers on SR 501 now have two lanes in each direction and turn lanes. Roundabouts keep traffic moving at the intersections of SR 501/56th Place and Pioneer Street/ 65th Avenue, and new sidewalks improve bicycle and pedestrian access across the interstate.

This project received stimulus funding from the 2009 American Recovery and Reinvestment Act (ARRA). This funding allowed WSDOT to move Stage 1 to construction. Stage 2 was funded by local agencies.

How You Benefit
Cross GlyphImproves Safety
The project widened the bridge over I-5 to two lanes in each direction, increased turn lane storage, improved access between SR 501 and I-5 and built sidewalks to improve access and bike/ped safety.
Car GlyphRelieves Congestion
Improves mobility and provides better access from I-5 to the City of Ridgefield and surrounding Clark County.

Partnerships & Cooperation
The City of Ridgefield, with support from the Port of Ridgefield, was the lead agency on this project and played a significant role in securing funding for the design and right of way acquisition process. WSDOT oversaw the design work, environmental analysis, right of way acquisition, and construction administration to ensure the project met state and federal requirements.


  • 2005 Gas Tax (TPA): $12.7 million
  • Pre-existing Funds (PEF): $11.2 million
  • Total Funding Available: $23.9 million

Contact Us
Area Engineer Chris Tams
WSDOT Columbia Gorge Area Office
P.O. Box 1709
Vancouver, WA 98668-1709
Phone: 360-759-1310, or toll-free at 1-866-279-0730


Abbi Russell
WSDOT Communications
PO Box 1709
Vancouver, WA 98668-1709
Phone: 360-905-2058

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