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CHAPTER 3: EXISTING CONDITIONS IN THE STUDYAREA <br /> Figure 3-7 Monday Summer Westbound Average Vehicle <br /> Volumes on 1-90 in the Study Area, 2018 <br /> 3000 <br /> 2500 <br /> a� <br /> E <br /> 0 <br /> > 2000 <br /> u <br /> L <br /> a) <br /> m 1500 - - <br /> an <br /> ro <br /> a� <br /> a 1000 - <br /> 500 <br /> 0 — <br /> 7 i9 O�?.O�?O .O S 0 6 0,0 d'O9 O'-igo .00�-00�OOAOOAOOAOOAOOAODAOOAOOAOOA000 700 <br /> O O O O O O •O D O <br /> �9� �9'Li 9,y� '9'Li ' '9 9'yi y� .off '17 'Li <br /> All Summer May-No Holiday Memorial Day <br /> July Average September- No Labor Day <br /> Holiday <br /> Source:WSDOT PTR B04,2018 data analyzed by Fehr&Peers <br /> 2024 Analysis 1-90 from two lanes in each direction to three <br /> Based on the existing conditions information lanes in each direction from the Cabin Creek <br /> collected and analyzed in 2019, an updated Interchange to the West Easton Interchange <br /> model was developed to project how future (scheduled for completion fall 2028).6 <br /> traffic conditions could potentially change if no Average 2018 volumes were collected by a <br /> improvements were made (see Appendix A). WSDOT permanent traffic recorder and are <br /> 1-90 in Upper Kittitas County experiences shown for different Mondays throughout the <br /> recurring seasonal congestion, particularly year in Figure 3-1. Memorial Day and Labor Day <br /> at the end of summer weekends and holiday volumes peak and then decrease considerably <br /> weekends in the westbound direction.This in the late morning hours.This sudden <br /> congestion typically causes slower speeds and decrease reflects the limited capacity of 1-90 <br /> congestion as far as east of the Elk Heights under congested conditions. <br /> Road interchange and dissipates when 1-90 Speeds decrease and corridor travel times <br /> widens to three lanes in each direction.There is increase considerably during this recurring <br /> a current WSDOT construction project to widen congestion. According to industry data for <br /> 6 https://wsdot.wa.gov/constructioe-ptanniii�llsearch-aroieCtsii-90-snorivalmie•pass-east-cabin-creek-interchamte-west-eastor.-interchange=thase-3 <br /> VOLUME I: FEASIBILITY REPORT 1-90 Corridor Easton to Cle Elum Feasibility Study 1 35 <br />