6.9. SR 09-06-2011 - Laserfiche WebLink

Home Browse Search

to improve the overall LOS at both intersections to a LOS D or better for any of the, development Scenarios. At the completion of the Phase 2 development, the results of the analysis indicate that with any of the Scenarios both the intersections of TH 10 / 169 at 171St Avenue and TH 10 / 169 at Twin Lakes Parkway will be operating at a LOS F in the PM peak hour. In order to mitigate these deficiencies an interchange at TH 10/169 and Twin Lakes Parkway would be needed to improve the overall LOS of all intersection to a LOS D or better with any development Scenario. The analysis concluded that with the completion of Phase 2 of the development, with any Scenario, an interchange will be needed on TH 10 at Twin Lakes Parkway, to accommodate any future traffic growth. Based on this assumption, it was determined that there was not a need to analyze each of the remaining development Phases separately. Therefore, the full development condition was analyzed to determine if any. further mitigation would be needed to accommodate the full traffic growth of the area. Depending on how and where development occurs in the area and how traffic on TH 10 / 169 increases, a third lane on TH 10 / 169 could delay the need for an interchange on TH 10 / 169 at Twin Lakes Parkway by eight years with Scenario 1, six years with Scenario 2 or four years with Scenario 3. For the Full Build condition for each Scenario it was assumed that an interchange would be constructed at TH 10 / 169 and Twin Lakes Parkway. Based on the level of development and the analysis for each Scenario, three intersections on Twin Lakes Parkway (168th Avenue, Wilson Street and 171St Lane) could have approaches with Level of Service. at or below acceptable levels, assuming a side street stop traffic control. If a roundabout or traffic signal is installed at the Twin Lakes Parkway and 168th Avenue in all three scenarios, the operations would improve to an LOS C. The Twin Lakes Parkway and Wilson Street intersection will experience approach delays with Scenario 2 or 3. The delays are strictly the result of the interchange operation and would be eliminated with a higher capacity interchange. The Twin Lakes Parkway at 171St Lane intersection will experience some delays for the eastbound and westbound minor street approaches with Scenario 3 during the PM peak hour. However, the overall intersection LOS is still at a B. All other study area intersections would be operating at LOS C or better during both the AM and PM peak hours for all three development Scenarios. City of EZk River Draft Alternative Urban Areawide Review August 2011 Page 8 of 90