Agenda - Council - 09/11/2001 - Laserfiche WebLink

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Brian Olson, P.E. - 9.- July 12, 2001 Future Traffic Operations AnalySis To determine how well the existing and proposed roadway system will accommodate the proposed developments, a traffic operations analysis was conducted for the a.m. and p.m.. peak hours for the year 2006. The signalized intersection of TH 47/153rd Avenue was analyzed using Synchro. The remaining unsignalized intersections were analyzed using the Highway Capacity Software. As shown in Table 3, all key intersections are expected to operate at an acceptable overall LOS B or better during the a.m. and p.m. peak hours in the year 2006, with existing traffic control and geometric layout. Table 3 Year 2006 Capacity Analysis Level of Service Results Level of Service Intersection A.M. Peak 'P.M. Peak TH 47/156th Lane* AdC . . AdC Yakima Streeff156th Lane* AdA AdA TH 47/153rd Avenue B : B Waco Street/153rd Avenue* AdA AdA '1 * Indicates an unsignalized intersection. The overall LOS is shown followed by the worst approach LOS. I I I I Adjacent Roadway Volumes Additional analysis was completed to determine future traffic .impacts on adjacent residential streets due to the increase in traffic volumes generated by the proposed residential development. The threshold for expected daily traffic volumes on a local residential street is 1,000 vehicles per day. Traffic counts were collected on Ute Street north of 153rd Avenue during the a.m. and p.m. peak hours. Based on the existing counts, it is estimated that Ute Street north of 153rd Avenue has an average daily traffic (ADT) volume of approximately 110 vehicles per day. In the year 2006, the ADT is expected to increase to approximately 250 vehicles per day with the construction of the proposed development. The amount of traffic expe.cled on. Ute Street will continue to be well below the expected daily threshold for a Iocal residential street. -147-