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CHAPTER 2: RANGE OF ALTERNATIVES 2.7 Alternative 5: South • This route would require multiple bridge structures over streams and creeks, Alternative 5 was proposed as a means to assess including one over the Yakima River. non-interstate enhancements south of the . The new bridge structure over the Yakima 1-90 corridor, aiming to meet the needs of the River would impact proposed restoration community.This alternative explores the possibility work happening along the Yakima River at of upgrading the current roadway serving as an Hanson Ponds. 1-90 bypass route to accommodate increased traffic • This would create a new southern volumes and speeds during times of congestion on I-90.The upgraded corridor would enhance connection to the existing interchange at MP 85 to better serve access to South Cie Elum. capacity and connectivity between Easton and Cie Elum, bypassing the I-90 roadway.The proposed Provides a more efficient emergency route realignment would start at Exit 70 and reconnect for the communities if a major failure to 1-90 at Exit 85. To achieve this, a total of four occurs on Interstate 90. lanes (adding one new lane in each direction) • Grading for a roadway would result in would be incorporated into Lake Easton Road, major land transformation to the existing Railroad Street, Nelson Siding Road, Westside area along the corridor. Drive, and Lower Peoh Point Road.Some segments • This route moves through areas of existing of the alignment might require the construction rural residential developments and of entirely new roads, each featuring two lanes communities. in each direction.These roadways would consist • This volume of new roadway expansion in of two 12-foot lanes in each direction with 6-foot undisturbed areas near streams is a very shoulders adjacent to each lane. Currently, existing high risk to culturally sensitive areas (fatal roadways primarily feature one lane in each flaw element). direction, with lanes approximately 12 feet wide. • This alternative could provide economic Figure 2-11 shows a conceptual cross-section for growth opportunities if land use zoning Alternative 5. Figure 2-12 presents the general changes were modified. alignment for the proposed alternative. • Impacts to ESA listed fish and terrestrial species as well as to aquatic resources. Considerations • Potential impacts to historic and cultural • Provides an alternative route for Nelson and sites, as well as parks and recreational South Cie Elum. facilities. • Route is currently often used by travelers • Could impact wildlife connectivity. when 1-90 traffic is congested. Figure 2-11 Alternative 5—Conceptual Cross-Section VOLUME I: FEASIBILITY REPORT 1-90 Corridor Easton to Cle Elum Feasibility Study 1 23