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CHAPTER 2: RANGE OF ALTERNATIVES <br /> 2.3 Alternative 2: Widen <br /> • Median width would be decreased, <br /> 1-90 in the Median possibly interfering with current WSDOT <br /> maintenance and emergency vehicle use. <br /> Alternative 2 would widen 1-90 on the inside to • Property impacts to Washington State <br /> add one new lane in each direction. Existing Department of Fish and Wildlife at MP 79.1 <br /> Lane widths would not change, nor would the due to realignment. <br /> existing outside shoulder.The median would • Both Cie Elum River Bridges 90/134N and <br /> be used for the two new lanes and a new inside 90/134S would need to be replaced at MP <br /> shoulder;the new lanes would be 12 feet wide 80.85. <br /> with a new inside shoulders of 4 to 10 feet(in . This alternative assumes the replacement <br /> both directions). of all culverts and stream structures to the <br /> The new roadway would result in three lanes current requirements for fish or hydraulic <br /> in each direction. Most of the land required for demand. <br /> expansion is located within the existing WSDOT . Widening towards the outside would still <br /> right-of-way. be required in select locations to avoid <br /> Figure 2-3 presents the general alignment for larger impacts. <br /> Alternative 2. Figure 2-5 shows a perspective • This option presents the least risk of <br /> cross-section of the proposed alternative. affecting or necessitating the replacement <br /> of the current bridges spanning the <br /> Considerations 1-90 corridor.The center barrier would <br /> be constructed around the existing <br /> • Widening would occur within existing center piers. However, it's important to <br /> WSDOT right of way(median). acknowledge that many of the bridges in <br /> • Additional median barriers/cable barriers this corridor are approaching the end of <br /> would be required due to the reduction in their designed lifespans and might require <br /> the clear zone. replacement regardless of efforts to avoid <br /> • Interior existing lanes would need to be impacts. <br /> replaced to change the cross slope of the . This option provides the ability for WSDOT <br /> road to drain to the outside. Maintenance and/or contractors to close <br /> a single lane on 1-90 during daytime hours <br /> and maintain two lanes of traffic. <br /> VOLUME 1: FEASIBILITY REPORT 1-90 Corridor-Easton to Cle Elum Feasibility Study 1 14 <br />