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.
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
WSDOT Project Engineer
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