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CHAPTER 2: RANGE OF ALTERNATIVES <br /> 2.5 Alternative 4A: Considerations <br /> North - SR 903 • Provides an alternative route for the <br /> Alternative 4A was developed to explore Ronald and Roslyn community. <br /> whether improvements outside the interstate • Provides a new emergency route for the <br /> system could address the identified project communities if a major failure occurs on <br /> needs.This alternative focuses on areas Interstate 90. <br /> north of 1-90, starting at SR 903 near Cie • Creates a new fire break and access for <br /> Elum Lake and extending to 1-90 at MP 70. wildiand firefighters. <br /> The primary objective of this alternative is • Could provide a connection from Lake Cie <br /> to offer an alternative route for communities Elum to the Palouse to the Cascades State <br /> and businesses without relying solely on Park Trail. <br /> 1-90 between MP 70 and MP 85. It involves • Alternative length is long based upon steep <br /> constructing approximately 12 miles of new terrain where existing roads do not exist. <br /> roadway and widening existing roads to add Grading for a roadway would result in major <br /> capacity, featuring two 12-foot lanes in each land transformation to the existing area <br /> direction with 5-foot shoulders adjacent to along the corridor. <br /> each lane. Upgrades will be made to existing • New bridge structures would be required <br /> roads such as Lake Cie Elum Dam Road,Tumble across Cie Elum River and side channels. <br /> Creek Drive, various Forest Roads, and Sparks • This volume of new roadway in a river area <br /> Road (East and West)to meet current roadway is a very high risk to culturally sensitive <br /> design standards. Some sections will require areas (fatal flaw element). <br /> constructing new roads on undisturbed terrain . This alternative could provide economic <br /> or utilizing existing gravel maintenance roads, growth opportunities if land use zoning <br /> while other sections will involve using existing changes were modified. <br /> roads with one 12-foot wide lane in each <br /> • Impacts to Endangered Species Act(ESA) <br /> direction. <br /> listed fish and terrestrial species as well as <br /> Figure 2-7 shows a conceptual cross-section of to aquatic resources. <br /> Alternative 4A. Figure 2-8 presents the general . Potential impacts to historic and cultural <br /> alignment for the proposed alternative. sites, as well as parks and recreational <br /> facilities. <br /> • Could impact wildlife connectivity. <br /> Figure 2-7 Alternative 4A—Conceptual Cross-Section <br /> VOLUME 1: FEASIBILITY REPORT 1-90 Corridor- Easton to Cle Elunn Feasibility Study 1 19 <br />