7505 SEAWAY BLVD SEPA 016 - 034 - SEAWAY TRANSIT CENTER Traffic Report 2025-04-14

I I it- Draft Memorandum Perteet 2707 Colby Avenue,Suite 900,Everett,WA 98201 I P 425.252.7700 I F 425.339.6018 ITable 3—PM Peak Hour Intersection Performance Metrics Model Build No Build I Year v/c Delay(s/veh) LOS v/c Delay(s/veh) LOS Seaway Boulevard and 75th Street SW 2015 0.64 111.5 F 0.61 118.2 F 2018 0.66 119.9 F 0.62 125.0 F I 2038 0.81 181.1 F 0.80 187.1 F 75th Street SW and Transit Center Driveway I 2015 0.28 2.2 A 2018 0.29 2.3 A No Intersection 2038 0.36 2.5 A I 75th Street SW and PUD Driveway 2015 0.32 8.8 A 0.33 0.8 2018 0.33 9.1 A 0.34 0.8 2038 0.40 9.4 A 0.42 1.0 Building the Seaway Transit Center will not change the no-build level of service letter designation for any of the I study intersections.In the AM peak hour,average delays will increase by less than 6 seconds per vehicle at Seaway Boulevard and 75th Street SW and 75th Street SW at the PUD driveway due to the installation of the Transit Center.In the PM peak hour,the average delays at 75th Street SW and the PUD driveway increase by less than I 9 seconds,however,the delay actually decreases at Seaway Boulevard and 75th Street SW due to the changes in mode share that result from the development. Overall, the construction of the Seaway Transit Center will minimally impact the immediate vicinity of the study intersections, but the increased transit service should noticeably benefit the City of Everett as a whole. I Projected turning movement volumes are provided in Appendix D.The Synchro highway capacity worksheets are provided in Appendix E. IConclusion I Transit centers are unique developments because their purpose is to increase the transit mode share and decrease the number of SOVs on the road network.As such,transit centers are a traffic mitigation tool.Because the Seaway Transit Center will not increase the net number of vehicles on the network, it is not subject to mitigation fees or the detailed traffic analysis requirement. I Site access for the proposed transit center will be through two driveways.The placement of the east driveway will be so close to the existing PUD driveway intersection at 75th Street SW that a tandem signal governed by I one controller will be required.This signal operation will be effective and will be designed to clear all vehicles in between the two driveway intersections. New signal poles, heads, and detection will be required to construct the tandem signal.The existing pole that controls the PUD driveway is the only one that can be maintained. 1 I I Page 14 File location:X:\Community Transit\Projects\201 10155-Community Transit On-Call\.016-Seaway Transit Center Preliminary Engineering\Traffic\Submittals\02- Revision based on Katherine Casseday Comments\Seaway Transit Center -DRAFT Traffic Memorandum.docx 1