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I-5 - M Street Bridge & I-705 Overcrossings Seismic Retrofit - Complete March 2014

Project Status - Complete
I-5/M Street and I-705 overcrossings map

WSDOT retrofitted I-5 bridges at M Street and along I-705 to meet current earthquake standards.

Crews installed steel jackets on the bridge columns and widened the cross beams to reinforce the bridges. These upgrades improve the integrity and performance of the bridges in the event of an earthquake.

How You Benefit
Cross GlyphImproves Safety
This will keep traffic flowing on this key route and protect nearby residences, businesses and traffic from damage if the columns were to crumble or fail during or after an earthquake.

Partnerships & Cooperation


Contact Us
Kim Mueller
WSDOT Project Engineer

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