CRP 693 W Cashmere Bridge Replacement Project 1 2 Existing - PowerPoint PPT Presentation

CRP 693 W Cashmere Bridge Replacement Project 1

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Existing Condition of West Cashmere Bridge Multi-Design Bridge with Warren Truss Main Spans Total Length 503 feet Posted for “No Trucks” 3

Existing Condition Needed Repairs • Concrete structural repairs & patching • Riprap Replacement • Steel strengthening • Steel cleaning and painting • Rail repairs 4

• Span over US 2/97 and ramp down into a roundabout (RAB) • Remove slip ramp and southern leg of intersection • Frontage roads use RAB to access US 2 intersection • Proposed structure carries all current regulated truck traffic Highway US 2/97 • Improves function at 4 intersections along US 2/97 PROPOSED Intersection & Approach Configuration 5

Hay Canyon Rd North End Overview • Restore existing north end bridge entrance to native vegetation. • Stormwater runoff will be treated and remain onsite through use of infiltration ponds. • Five way intersection roundabout for optimal traffic flow and space configuration. • Relocate signal pole to provide larger turn radius for trucks heading westbound on US Hwy 2. • Landscape design elements for aesthetic appeal. 6

Landscape restoration Shoulder Driveway rock match • Proposed bridge raised higher than the existing bridge to adhere to BNSF and WSDOT regulations. Driveway • Stormwater runoff will be treated and remain onsite through use match of an infiltration pond and drywells. Stormwater facility South End Overview Plan View & Existing VS. Proposed Bridge Elevation 7

8 New Structure Length 952 feet Total Main Bridge Span 732 feet Bridge Ramps Down to a Roundabout Bridge Maintains the Only Overhead Crossing of the RR in and around Cashmere

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Cross Section: Two 12-foot driving lanes; Two 5-foot shoulders; One 6-foot sidewalk 10

Traffic Control Plan 1 Detour During Bridge Closure 1 1

Traffic Control Plan 2 Detour During US2 Closure (Night-time Only) 1 2

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