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I-5 - Grand Mound to Maytown Stage One - Add Lanes - Complete July 2011

Project Status - Complete
Map showing Grand Mound to Maytown area View entire map. Project area is along I-5 beginning at SR 121 (Maytown Road, Exit 95) and south to SR 12 (Grand Mound).

View drawing of I-5/SR 121 interchange improvements(Maytown).

Revisions to the I-5/US 12 Grand Mound interchange is a separate project. Learn more.

This is one of a series of projects to widen I-5 in both directions in Lewis and Thurston counties.

How You Benefit
Cross GlyphImproves Safety
The project realigns the curve south of the Grand Mound Interchange on I-5, increasing the driver distance. The result will be improved driver comfort and safety.
Car GlyphRelieves Congestion
The additional lanes provide much-needed congestion relief. In 1968 an average of 17,000 vehicles per day used this section of the highway. Today, that number is nearly 80,000.

Partnerships & Cooperation
Thurston County Waste Management provided funding of $56,930 for this project. 


Contact Us
Dennis Engel, Project Engineer
WSDOT Tumwater Project Office
821 Airport Court SE
Tumwater, WA 98501-6805
Phone: 360-570-6750

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