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Middle Fork Snoqualmie River Road |
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Proposed Alternatives for Roadway Improvement
Current roadway improvement alternatives have been developed by the project team after considering public input, technical and regulatory requirements. A full range of viable options were considered and analyzed. Each concept was rated according to how well it met the project's stated Purpose & Need -- to improve the physical conditions and safety features of the Middle Fork Snoqualmie River Road for existing and projected traffic demand, while minimizing adverse impacts to sensitive environmental resources. Read the full Purpose & Need Statement.
In addition to the "No-Build" alternative, Alternatives 4, 5, and 6 have been determined as best meeting the Purpose & Need and are being advanced for further consideration by project officials. No-Action Alternative (No Build) With the No-Action Alternative, no improvements would be made to the road. Extensive and costly maintenance would continue to be required and safety hazards would remain. This alternative must be carried forward to provide a comparative evaluation of the other alternatives presented. 1) 22' Road (Alternative 4) Alternative 4 would reconstruct a 22-foot wide paved road along the existing alignment. Minor horizontal and vertical alignment adjustments would be made at the curves and along the long tangent section to help promote a design that improves safety and blends with the context of the Valley. Some of the tighter curves would be signed to minimize alignment changes. Shoulder slopes would be relatively flat (1Vertical(V):4Horizontal(H)) within the clear zone area and would then be changed to no steepr than 1V:2H to help minimize the roadway footprint. Parking facilities may possibly be developed off the roadway. 2) 24' Road (Alternative 5) This alternative would provide a 24-foot wide paved roadway with realignment at the curves as well as some of the long tangent sections. This alternative would also have shoulder slopes of 1V:4H within the clear zone areas and the slopes would then be changed to no steeper than 1V:2H to help minimize the roadway footprint. A parallel parking lane may possibly be provided at specified locations along the route where river access is most common. 3) 30' Road (Alternative 6) Aternative 6 would provide a 30-foot wide paved roadway with new alignment at the curves. No changes would be made to the long tangent sections. The travel lanes would be 10 feet wide with a 5-foot paved shoulder on each side that could e used for pedestrian or bicycle access. This alternative would have shoulder slopes of 1V:4H within the clear zone area and the slopes would be changed to no steeper than 1V:2H to help minimize the roadway footprint. Parking facilities may possibly be developed off the roadway. |
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