06 16 20 PWA_02_02 Exh2 - IS-MND

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L w FAIRVIEw BRIDGE REPLACEMENT AND STREET IMPROVEMENTS INITIAL STUDY/MITIGATED NEGATIVE DECLARATION J' (9TH STREET TO 16TH STREET) PROJECT MAY 2020 SANTA ANAL CALIFORNIA intersection operations. Table 3.17.A depicts existing intersection LOS, while Table 3.17.13 shows roadway segment LOS. Table 3.17.A: Existing Intersection LOS Summary Intersection 2017 Existing Conditions AM Peak Hour PM Peak Hour Delay LOS Delay LOS 1 Fairview Street/17th Street 0.835 D 0.902 E 2 Fairview Street/16th Street' 31.6 D 20.0 C 3 Fairview Street/12th Street' 25.1 D 19.0 C 4 Fairview Street/9th Street' >50.0 F 47.4 E 5 Fairview Street/Civic Center Drive 0.642 j B 0.640 1B = unsatisfactory LOS The intersection is unsignalized and was assessed using the HCM methodology. Delay values shown are in seconds per vehicle. >50.0 = HCM delay value is greater than 50.0 seconds per vehicle, LOS F. HCM = Highway Capacity Manual LOS = level of service v/c = volume -to -capacity ratio Table 3.17.B: Existing ADT Volumes and LOS Roadway Segment 2017 Existing Conditions Arterial Type Capacity ADT LOS 17th Street to 16th Street 4 Lanes Divided 37,500 42,440 F Fairview 16th Street to 12th Street —Fairview Bridge 4 Lanes Undivided 25,000 41,890 F Street 12th Street to 9th Street 4 Lanes Divided 37,500 40,980 F 9th Street to Civic Center Drive 6 Lanes Divided 56,300 41,720 C = unsatisfactory LOS ADT = average daily traffic LOS = level of service v/c = volume -to -capacity As Table 3.17.A shows, the intersections of Fairview Street/17th Street and Fairview Street/9th Street currently operate at unsatisfactory LOS E or worse during one or both peak hours. The three other study intersections currently operate at satisfactory LOS D or better. As shown in Table 3.17.13, the segments of Fairview Street (including the bridge) that provide only four lanes of travel currently experience daily traffic volumes greater than their respective design capacities, meaning these roadway segments currently experience unsatisfactory LOS F. 3.17.2 Impact Analysis a. Would the project conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? Less Than Significant with Mitigation Incorporated. Construction of the proposed Project may require temporary closure of one travel lane at a time on the bridge, which would temporarily delay 3-94 R:\WKE1702\ISMND\Final ISMND\Fairview Street Bridge Final ISMND.docx (05/26/20)