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I-5 - Grand Mound to Maytown Stage Two - Replace Interchange - Complete October 2014

Project Status - Complete
Project vicinity map. View entire map. Project area is at the I-5 interchange with US 12 (Grand Mound). 


Proposed interchange and realignment of I-5.

The project re-built the I-5/US 12 interchange at Grand Mound to improve mobility and safety. The modified interchange configuration of US 12 over Interstate 5  eliminated the loop ramps. Traffic signals were installed at both ramp intersections resulting in a typical "diamond" interchange configuration. On the east side of the interchange, the two existing exits from northbound I-5 are consolidated to one exit point.

How You Benefit
Cross GlyphImproves Safety
The project realigned and lengthened on- and and off-ramps at the interchange to provide the more room for vehicles to safely enter and exit the highway. The project also added signals and improved driver sight distance.

Partnerships & Cooperation


Contact Us
Steve Fuchs

WSDOT Tumwater Project Office
Phone: 360-570-6750

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