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Location C: Exit 53 Area <br />Area Limits Intersection of SR 906 & Yellowstone Road <br />Jurisdiction WSDOT <br />Land Use Context Access to downhill skiing, vacation <br />rentals, restaurants, and hotels <br />Speed Limit SR 906: 35 mph, Yellowstone Road: 25 mph <br />AADT 2,700 (SR 906 southbound), 2,700 (SR 906 northbound)* <br />Proposed Countermeasures <br />A series of countermeasures were selected for the Exit 53 area to address both <br />collision-related and non-collision-related concerns, as illustrated in Figure 28. <br />Items in bold are FHWA Proven Safety Countermeasures. <br />Cost Estimates <br />Approximate planning-level costs for each countermeasure are outlined below: <br />Table 5. Location C - Cost Estimates of Proposed Countermeasures <br />Countermeasure Application Crash reduction factor <br />† Cost level‡ <br />Dedicated Turning Lanes Intersection 25-48%$-$$$$ <br />Roadway Lighting Intersection 42%$$ <br />Roadway <br />Reconfiguration Intersection Not available $-$$$$ <br />Systematic Application <br />of Multiple Low-Cost <br />Countermeasures <br />at Stop-Controlled <br />Intersections <br />Intersection 19%$ <br />Roundabout Intersection 82%$$$$$ <br />Source: SCJ, 2025. <br />It is important to note that due to snow-plow activity within the Snoqualmie <br />Pass area, recessed plastic pavement markings are recommended for <br />channelization. Sufficient budget must be allocated for renewing pavement <br />markings for the proposed solutions to be effective. <br />* Washington Spatial Data portal, WSDOT – Traffic Counts (AADT) Current map, <br />https://gisdata-wsdot.opendata.arcgis.com/datasets/wsdot-traffic-counts-aadt-current/ <br />explore?location=47.417989%2C-121.409286%2C16.35 <br />† CRFs are approximated based on the data provided by the FHWA Proven Safety Countermeasures. <br />‡ Costs are based on a preliminary engineer’s estimate of magnitude. <br />Collision History <br />Between 2014 and 2023, there were 22 reported collisions in this priority <br />area. Of these 22 collisions, 17 collisions were intersection-related, while 12 <br />collisions involved a driver exceeding the reasonably safe speed limit. Four <br />collisions resulted in a possible or minor injury. Two involved a vulnerable road <br />user. <br />Non-Collision Concerns <br />Additional concerns were identified in this area through public comments, <br />stakeholder feedback, and observation by the County and consultants. <br />Concerns include: <br /> ƒCongestion on Exit 53 off-ramp. <br /> ƒIntersection confusion due <br />to signs that are out of sight, <br />limited sight distance, unclear <br />pavement markings, and <br />size of the intersection. <br /> ƒLimited space due to spacing <br />between on-/off-ramps and SR <br />906/Yellowstone Road intersection. <br /> ƒLack of pedestrian connectivity <br />between Summit Central and <br />Summit West, connecting summer <br />and winter ski lift users to local <br />restaurants and businesses. <br />18% <br />17 <br />Were <br />intersection- <br />related <br />Collisions 12 <br />Involved a driver <br />exceeding the <br />reasonably safe <br />speed limit. <br />Collisions 2 <br />Involved a <br />vulnerable road <br />user. <br />Collisions <br />Possible or minor injury collisions4 <br />22 Reported Collisions <br />Of the 22 collisions: <br />52Kittitas County | Snoqualmie Pass Comprehensive Safety Plan