06 16 20 PWA_02_02 Exh2 - IS-MND

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INITIAL STUDY/MITIGATED NEGATIVE DECLARATION FAIRVIEw BRIDGE REPLACEMENT AND STREET IMPROVEMENTS L S A MAY 2020 (9TH STREET TO 16TH STREET) PROJECT SANTA ANA. CALIFORNIA Table 3.17.D: 2021 ADT Volumes and Roadway Segment LOS Roadway Segment Arterial Type Capacity ADT LOS 2017 Existing Condition 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 2021 No Project Condition 17th Street to 16th Street 4 Lanes Divided 37,500 42,910 F Fairview 16th Street to 12th Street —Fairview Bridge 4 Lanes Undivided 25,000 42,350 F Street 12th Street to 9th Street 4 Lanes Divided 37,500 41,430 F 9th Street to Civic Center Drive 6 Lanes Divided 56,300 42,180 C 2021 Plus Project Condition 17th Street to 16th Street 4 Lanes Divided 37,500 43,620 F Fairview 16th Street to 12th Street —Fairview Bridge 6 Lanes Divided 56,300 43,050 C Street 12th Street to 9th Street 6 Lanes Divided 56,300 42,110 C 9th Street to Civic Center Drive 6 Lanes Divided 56,300 42,880 C = unsatisfactory LOS ADT = average daily traffic LOS = level of service v/c = volume -to -capacity ratio 12th Street, which operate better due to reductions in travel patterns (higher north -south through traffic, while lower east -west turning movements at 17th Street) and changes in access (12th Street). Implementation of the proposed Project would result in prolonged delay for the eastbound left - turn movements at the intersection of Fairview Street at 16th Street. This represents a worsening of access conditions to 9 a.m. and 5 p.m. peak -hour conditions. As this resulting deficient operation is indicative of only the worst -performing movement (the eastbound left - turning vehicles in the p.m. peak hour), this delay value and LOS are not considered to be indicative of the overall intersection and are not considered a significant impact. As Table 3.17.D shows, the proposed increase in roadway capacity to Fairview Street south of 16th Street is anticipated to accommodate both ambient existing to 2021 traffic growth and north -south regional traffic rebalancing at satisfactory LOS C. This is an improvement over both existing and 2021 No Project overcapacity traffic conditions. In addition, as shown in Table 3.17.D, Fairview Street from 17th Street to 16th Street would continue to result in unsatisfactory LOS F conditions. However, this segment is outside the Project limits. As described earlier, the City's General Plan Circulation Element identifies Fairview Street as a 6- lane Major Arterial Highway, including the segment between 17th Street and 16th Street. Implementation of additional lanes within this roadway segment, consistent with the General Plan, would eliminate the roadway deficiency. As part of its annual Capital Improvement Program (CIP), the City conducts ongoing monitoring and collects citywide traffic data for all arterials and intersections within the City. As part of this ongoing monitoring, the City determines needed improvements and prioritizes projects for funding to address identified congestion and/or safety concerns. The segment of Fairview Street between 17th Street and 16th Street is already identified as roadway link of concern. R:\WKE1702\ISMND\Final ISMND\Fairview Street Bridge Final ISMND.docx (05/26/20) 3-97