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Interstate 90 is a critical link connecting the large population and business centers of Puget Sound with the agricultural industries and recreational activities of eastern Washington. WSDOT is building a safer, more efficient and reliable interstate from Hyak to Easton, maintaining I-90 as a primary statewide transportation corridor.

WSDOT plans to address project needs in the 15 mile corridor by reducing road closures due to avalanches, stabilizing rock slopes, replacing concrete pavement, adding capacity and improving bridges and culverts to facilitate the movement of people, fish and wildlife.