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2007-11-28 CC Packet
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2007-11-28 CC Packet
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<br />Jane Rose <br />Jack Corkle <br /> <br />October 16, 2007 <br />Page 2 <br /> <br />BackgroundGro~h <br /> <br />. A yearly growth rate of 2.4 percent was used to account for background growth in the <br />area. It was documented that this percentage corresponds to the most recent County State <br />Aid factor used by Mn/DOT. This amount of background growth seems reasonable based <br />on the CSAH 14 forecasts developed by SRF for the 2030 regional access alternatives in <br />the CSAH 14 (I-35W to I-35E) Study. It is important to note that when considering "full <br />build" ofthe area, i.e. future development of the parcels adjacent to the proposed northerly <br />crossing of Peltier Lake or the proposed interchange areas, the ADT for the roadway <br />network increases significantly, resulting in a yearly growth rate ranging between five and <br />six percent. However, this was identified for long-term planning purposes and is <br />considered beyond the scope of this study. <br /> <br />· A cursory review of the future 2030 no-build traffic volumes was completed to compare <br />to existing volumes. Using a 2.4 percent yearly growth rate between existing and 2030 no <br />build volumes, the no build numbers appear low, resulting in closer to two-percent yearly <br />growth. <br /> <br />Directional Distribution <br /> <br />. The directional distribution that was used for the proposed development is shown in <br />Figure 21-5. As shown, 65 percent of the trips are routed to/from the east on I-35E and <br />east of the interchange, which indicates a regional trip distribution. It is assumed that this <br />distribution was used for all proposed uses (i.e. residential, office and retail). Generally, <br />directional distribution varies based on the land use type. For example, retail development <br />typically has a "local" draw and residential and office uses have a "regional" trip draw <br />during the peak periods. <br /> <br />. In the CSAH 14 Study that was completed by SRF Consulting Group in 2004, seven <br />construction alternatives were conceptualized for Main Street (CSAH 14) in the <br />surrounding area. The detailed traffic operations analysis that was completed for the <br />study (Option 5A) consists of two additional regional accesses, one at CSAH 14/I-35W <br />and the other at 80th StreetlI-35E. It does not appear that the Centerville EA W Traffic <br />Study took any future changes to the regional roadway system into account. Changes in <br />regional access would likely change the directional distribution, and the overall affect on <br />the adjacent intersections. <br /> <br />Operations/Capacity <br /> <br />. The Centerville EA W traffic analysis indicates that all intersections are currently <br />operating at an acceptable level of service during the peak periods. In fact, the worst <br />operations were found at the intersection of CSAH 14/20th A venue with a LOS C during <br />the p.m. peak hour. <br />
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