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PROJECT BACKGROUND <br />In response to citizen -led task forces such as the Upper Kittitas County Traffic Committee, working <br />groups, and public comment, Kittitas County Public Works initiated the 1-90 Corridor— Easton to <br />Cie Elum Feasibility Study in partnership with corridor stakeholders including the Washington State <br />Department of Transportation (WSDOT) and the Safety, Transportation, Environment, Equity, and <br />Resiliency on 1-90 (STEER 1-90) Coalition. <br />Study Area <br />Interstate 90 (1-90) spans 300 miles in <br />Washington State from the Port of Seattle to the <br />Idaho state line, continuing east across the United <br />States. 1-90 is the major east -west transportation <br />corridor in Washington State and is vital to <br />commerce, economy, and recreation statewide. <br />Passing through Kittitas County it is a scenic <br />highway identified as the Mountain to Sound <br />Greenway (National Heritage Area). Residents, <br />tourists, and businesses have long commented on <br />transportation inefficiencies between Easton and <br />Cie Elum impacting safety, freight, and mobility. <br />The area of study is located along the 1-90 <br />corridor from Easton to Cie Elum, a 15-mile <br />portion in Upper Kittitas County beginning at the <br />West Easton interchange at milepost (MP) 70.3 <br />and ending at the 1-90/State Route 970/903 <br />interchange at MP 85 within WSDOT's South <br />Central Region, and the Upper Kittitas County <br />surrounding communities. Upper Kittitas <br />County generally includes the Town of South <br />Cie Elum, City of Cie Elum, City of Roslyn, and <br />the areas of Ronald and Easton. <br />Study Objectives <br />The feasibility study aims to investigate <br />concerns from stakeholders by engaging <br />agencies and the public to identify and describe <br />issues related to transportation demand, <br />safety, freight mobility, the environment, <br />resiliency, and equity/inclusion issues within <br />the study area to identify possible solutions. <br />VOLUME I: FEASIBILITY REPORT <br />1-90 Corridor Easton to Cie Elum Feasibility Study I xiv <br />