2017-2037 Comp Plan Update Enabling Ordinance with Exhibit A

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Kittitas County December 2016 Comprehensive Plan segment, through each intersection, and on the freeway ramps. The main purpose in this modeling exercise was to determine two sets of information: (1) How much traffic would be on each road segment for different scenarios and different years; and (2) How would the additional traffic affect speeds on road segments. The model identified important information on several matters: 1. Queuing problems may occur on Exit 54, westbound, in 2015 (depending on the level of development in this sub-area) 2. Queuing problems may occur on Exit 53 as well, in 2015. 3. Speeds may be very low (below 10 mph) on SR-906 northbound between Summit Central and Exit 53. 4. Speeds on 1-90 over the summit may drop to 50 mph by 2015. 5. Congestion will worsen on SR-906 between Exits 52 and 53. The expected volume in the peak hours would be greater than the capacity of a two-lane road. 6. Building a frontage road on the east side of 1-90 would not result in significant time savings for residents. The model was run for both 2005 and 2015. Conditions were modeled for higher and lower housing development (please see the Land Use section of the Plan). The differences in operating conditions under these scenarios was not significant from those conditions under the “Planning Projections”. These model results, coupled with our observations of pedestrian and parking activities, result in the following proposals to improve traffic flow at Snoqualmie Pass now and in the future. Most of these proposals are based on better management, rather than built improvements. 6.1.3 Improving Traffic Operations - Physical Improvements As traffic levels increase, congestion will rise and travel speeds will fall. The Pass area already suffers from traffic congestion on busy winter weekends. The following sections outline improvements that should ease traffic congestion now, and help alleviate problems in the future. 1) Realigned SR-906 at Summit Central Booth Creek Holdings has included a realigned SR-906 in their Master Plan for The Summit at Snoqualmie. SR-906 would be moved so it lay outside the Summit Central parking area. This is intended to remove the current conflict between skiers and pedestrians. Now, all skiers have to cross SR-906 to reach the lifts (except those parking along the southwest side of SR-906). The proposed realignment would bend around to the north of the parking. A few sharp bends would be created in SR-906. This could create some safety and operational issues. Drivers would have to negotiate sharper curves under snow and ice conditions. Plowing may become more difficult. The high snow banks created by the plows, combined with the curves, may create sight distance problems.