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Memorial Day 2018, average speeds along the <br />corridor decrease from free flow (close to 70 <br />mph) to under 10 mph for long periods of the <br />day and large swaths of the corridor. Travel <br />times from Elk Heights Road to Lake Easton <br />Road increase from about 30 minutes to as <br />much as 150 minutes at the most congested <br />time of the day. <br />CHAPTER 3: EXISTING CONDITIONS IN THE STUDY AREA <br />congestion along the corridor with slow <br />speeds through much of the day, as shown <br />in Figure 3-2. The figure shows travel speeds <br />in increments of 10 mph between Elk Heights <br />Road (rightmost column) and Lake Easton Road <br />(leftmost column) by time of day, with 9:00 a.m. <br />to 9:15 a.m. at the top of the figure and 8:45 <br />p.m. to 9:00 p.m. at the bottom. <br />The 2018 model was updated and validated As shown in Figure 3-2, the congestion begins <br />the model against current industry data. early in the day near Lake Easton Road, and <br />The model projected traffic for year 2040, quickly builds back past Elk Heights Road. Slow <br />which again reflected the heavy westbound speeds in the corridor span from about 10:00 <br />Figure 3-2 Future Year 2040 No Build Modeled Travel Speeds by Time of Day <br />and Location along 1-90 in the Study Area on Memorial Day Monday <br />No Build: Existing Configuration, Speeds <br />Westbound -* <br />Tree Farm Rd Golf Course Rd W 1st St <br />ake Easton Road Cie Elum <br />Elk Heights Road <br />9:00 AM <br />_ ... <br />_ <br />9:15 AM <br />9:30 AM <br />9:45 AM <br />0:00 AM <br />10.15 AM <br />10:30 AM <br />10.45 AM <br />11:00 AM <br />— — <br />11:15 AM <br />11:30 AM <br />11.45 AM <br />12:00 PM <br />12:15 PM <br />12:30 PM <br />12.45 PM <br />1:00 PM <br />1:15 PM <br />1:30 PM <br />1:45 PM <br />2:00 PM <br />2:15 PM <br />2:30 PM <br />2:45 PM <br />3:00 PM <br />3:15 PM <br />3:30 PM <br />3:45 PM <br />4.00 PM <br />4.15 PM <br />4:30 PM <br />4.45 PM <br />5:00 PM <br />5:15 PM <br />5:30 PM <br />5.45 PM <br />6:00 PM <br />6:15 PM <br />6:30 PM <br />6:45 PM <br />7:00 PM <br />7:15 PM <br />7:30 PM <br />7:45 PM <br />8:00 PM <br />8:15 PM <br />8:30 PM <br />8.45 PM <br />0-20 MPH <br />21-30 MPH <br />31-40 MPH <br />41_50 MPH <br />51-60 MPH <br />61-70 MPH <br />Source: Fehr & Peers <br />VOLUME 1: FEASIBILITY REPORT 1-90 Corridor — Easton to Cle Elunn Feasibility Study 1 36 <br />