6.9. SR 09-06-2011 - Laserfiche WebLink

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Trip Distribution Figure 21-3 shows the distribution of site /development generated trips that would be expected to access the major roadways in the network. The distribution was developed using the City's Transportation Plan Travel Demand Model and existing turning movement counts. Trip distribution is separated directionally and also by the AM and PM peak hours. This method takes into account differing travel patterns during different times of the day, likely due to congestion. Future Roadway Network The baseline build future roadway network was based on the recommendations in the 171St Avenue Focused Area Study (FAST). It was assumed that these improvements would be constructed as development occurs in the study area. The primary roadway network is shown in Figure 21-4 and includes: 1. Realignment /extension of Twin Lakes Road(as Twin Lakes Parkway) from 171St Avenue to west of TH 10 / 169 intersecting TH 10 / 169 at a location approximately 1/z mile south of the exiting 171St Avenue intersection. The roadway cross section includes four (4) lanes (2 lanes in each direction) with left turn lanes at the primary intersections. A traffic signal system is assumed at the TH 10 / 169 and Twin Lakes Parkway intersection and include dual left turn lanes from TH 10 / 169 to northbound Twin Lakes Parkway and dual left turn lanes from Twin Lakes. Parkway to eastbound TH 10 / 169. 2. Maintaining the existing full movement intersection with the traffic signal system at the TH 10 / 169 and 171St Avenue intersection. It is assumed that dual lefts for eastbound TH 10 / 169 to northbound 1715tAvenue would be required to accommodate existing and future traffic volumes. 3. Closing 173rd Avenue to Right-in /Right-out access. MnDOT has indicated this access will be closed to Right-in /Right-out with their planned overlay project in 2013. 4. Construction of 168th Avenue / Olson Street from Twin Lakes Parkway to 165th Avenue. The roadway cross section includes two (2) lanes with right and left turn lanes at the primary intersections. 5. Construction of a connecting local street from 171St Avenue to Twin Lakes Parkway. The roadway cross section includes two (2) lanes with right and left turn lanes at the primary intersections. 6. Development /site access will be provided at locations based on the City's Transportation Plan Access Spacing Guidelines and will be determined with each development. In addition to the baseline roadway network, a potential short term improvement of a third lane on TH 10 / 169 and a potential future interchange at Twin Lakes Parkway was considered and evaluated as to when they maybe needed. It was assumed that with the interchange option, all other access to TH 10 / 169, including City of Elk River Draft Alternative Urban Areawide Review August 2011 Page 60 of 90