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CHAPTER 3: EXISTING CONDITIONS IN THE STUDY AREA <br /> 3.1 Safety Table 3-1 Collision Types along 1-90 in the <br /> The safety discussion includes information Study Area,2018 through 2023 <br /> regarding collisions along 1-90, as well as %of <br /> surrounding County roads. In addition, common Collision Type Crashes Total <br /> emergency and evacuation routes are also Barrier/Median 131 17% <br /> discussed, including typical responders. .............................................. <br /> Struck Animal 119 16% <br /> ............................................................................. <br /> 3.1.1 Existing Crash Object/Road Debris 57 8% <br /> Assessment ............................................................................. <br /> Vehicle Overturned 40 5% <br /> An assessment of existing crash history <br /> was performed to determine overall trends/ Rear End 180 24% <br /> deficiencies on the 1-90 corridor in the study """"""""p'.........""'.... <br /> area. The existing safety assessment of the Side-swi e 86 11/° <br /> I-90 corridor is focused on both eastbound Snow/Earth Bank 44 6% <br /> and westbound travel lanes between Easton """"""""""""....... "'...... <br /> and Cie Elum.The Washington Department Over Embankment/ 30 4/° <br /> of Transportation (WSDOT) provided existing Ditch <br /> ............................................................................. <br /> crash history data on this portion of 1-90 and Other* 69 9% <br /> local roads in the study area for the most <br /> recent complete six years (2018 through 2023). Total 756 100% <br /> The existing crash data is summarized in the Source:WSDOT,January 30,2024 <br /> following sections. Nate:"Other"collision types include,but are not limited to:fire <br /> started in vehicle;jackknife trailer;vehicle struck pedestrian;one <br /> parked-one moving;and from same direction-all others <br /> 1-90 Crash History <br /> Existing data includes 756 crashes that <br /> occurred on the I-90 mainline between Table 3-2 Collisions by Injury Severity along <br /> 1-90 in the Study Area,2018 through 2023 <br /> mileposts(MP) 70 and 85 during the six-year <br /> period.This averages a total of 126 crashes per Injury Severity Crashes %of <br /> year or roughly one every three days. Total <br /> As shown in Table 3-1,the most common Fatal 8 1% <br /> collision types on this section of 1-90 include Serious Injury 12 2% <br /> rear-ends (24%), a vehicle hitting a barrier or ............................................................................. <br /> median (17%), and a vehicle hitting an animal Minor Injury 73 10% <br /> (predominantly deer and elk; 16%). possible Injury 97 13% <br /> As illustrated in Table 3-2,74 percent of all <br /> crashes that occurred on this portion of 1-90 Property Damage 558 74% <br /> Only(PDO) <br /> during the six-year period were property- ......................................................................... <br /> damage-only crashes.There were eight Unknown 8 1% <br /> fatalities and twelve serious injury crashes <br /> Total 756 100% <br /> over the six-year period. <br /> Source:WSDOT,January 30,2024 <br /> VOLUME I: FEASIBILITY REPORT 1-90 Corridor—Easton to Cle Elunn Feasibility Study 1 29 <br />