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TRAFFIC IMPACT ANALYSIS FAIRVIEW STREET IMPROVEMENTS FROM 9T" STREET TO 16T" STREET AND /\ <br />JUNE 2018 BRIDGE REPLACEMENT PROJECT J" <br />SANTA ANA, CALIFORNIA <br />The relationship between LOS, ICU value (i.e., the v/c ratio), and HCM delay (at unsignalized <br />intersections) is as follows: <br />Levels of Service <br />A <br />B <br />C <br />D <br />E <br />F <br />ICU <br />0.00-0.60 <br />0.61-0.70 <br />0.71-0.80 <br />0.81-0.90 <br />0.91-1.00 <br />> 1.00 <br />Delay per Vehicle (seconds) <br /><10.0 <br />10.0-15.0 <br />15.0-25.0 <br />25.0-35.0 <br />35.0-50.0 <br />>50.0 <br />ICU = intersection capacity utilization <br />The City considers LOS D to be the upper limit of satisfactory intersection operations. <br />The four roadway segments between the five study intersections have been assessed for their <br />adequacy in accommodating their respective existing and projected 24-hour daily traffic volumes <br />according to roadway capacities and service standards prescribed by the City's Circulation Element. <br />The relationship between daily traffic volumes and LOS is as follows: <br />Arterial Type <br />LOS A <br />LOS B <br />LOS C <br />LOS D <br />LOS E <br />LOS F <br />8 Lanes Divided <br />45,000 <br />52,500 <br />60,000 <br />67,500 <br />75,000 <br />> 75,000 <br />6 Lanes Divided <br />33,900 <br />39,400 <br />45,000 <br />50,600 <br />56,300 <br />> 56,300 <br />4 Lanes Divided <br />22,500 <br />26,300 <br />30,000 <br />33,800 <br />37,500 <br />> 37,500 <br />4 Lanes Undivided <br />15,000 <br />17,500 <br />20,000 <br />22,500 <br />25,000 <br />> 25,000 <br />2 Lanes Undivided <br />7,500 <br />1 8,800 <br />10,000 <br />11,300 <br />12,500 <br />> 12,500 <br />Source: City of Santa Ana General Plan Circulation Element, Table A-1 (January 2010) <br />LOS = level of service <br />Similar to the City's acceptability threshold for intersections, LOS D is considered to be the upper <br />limit of satisfactory daily roadway volume -to -capacity. <br />EXISTING (2017) CONDITIONS <br />As noted previously, the City's Circulation Element and the MPAH identify the segment of Fairview <br />Street between 17th Street and Civic Center Drive as a six -lane, divided Major Arterial. However, <br />Fairview Street currently provides two lanes in each direction with a painted divided median <br />between Civic Center Drive and 17th Street; the bridge itself provides two lanes in each direction <br />with no median. The segment of Fairview Street to the north of 16th Street currently provides two <br />lanes in each direction, with the exception of a three -lane southbound segment between Avalon <br />Avenue and Bolivar Circle. Fairview Street south of 9th Street currently provides three lanes in each <br />direction. <br />Pedestrian sidewalks are provided on both sides of Fairview Street with the exception of the bridge, <br />which does not have sidewalks on either side. Currently, pedestrians walk along the northbound and <br />southbound shoulders of Fairview Street. Bicycle facilities are also absent for the length of Fairview <br />Street between Civic Center Drive and 17th Street. The Santa Ana River Trail connects to both the <br />northbound and the southbound sides of Fairview Street at the southern end of the bridge. <br />P:\WKE1702\Traffic\doc\Traffic Analysis Report rev - Caltrans Comments.docx u06/07/18» 6 <br />