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<br />. <br /> <br />. <br /> <br />. <br /> <br />LANE-ADD TRAFFIC DIVERSION ANALYSIS <br /> <br />I-35W currently has three through lanes in each direction from TH 36 to TH 10, with a <br />fourth lane in the TH 10/I-35W common segment that functions as an extended auxiliary <br />lane. Forecasts and analysis were prepared for two alternatives: a one-lane addition to 1- <br />35W and a two-lane addition to I-35W. A comparison of the forecasts was made to <br />determine the nature of the additional traffic: was it local origins and destinations or was <br />it regional through-trips? <br /> <br />Figure 13 shows the location of two screenlines across the region, stretching to include <br />two logical regional facilities from which regional traffic might be diverted: TH 169 and <br />I-35E. At the north screenline (parallel to County Road I) a total of 11,000 trips were <br />diverted to I-35W with the one-lane addition. Traffic on TH 169, TH 252, TH 10 and 1- <br />35E (the paralleling principal arterials) account for 27 percent of the traffic diversion. <br />Minor arterials within approximately two miles ofI-35W (Long Lake Road, Silver Lake <br />Road, Lexington Avenue and the planned arterial through the TCAAP site) account for <br />51 percent of the diversion. (The remaining 21 percent is spread across other roadways, <br />in particular Central Avenue (TH 65). The incremental diversion of traffic from adding a <br />second though-lane in each direction are 20 percent on principal arterials, 33 percent on <br />nearby arterials and 47 percent on other roadways. <br /> <br />A southern screenline ( approximately County Road D) shows 43 percent from the <br />above-mentioned principal arterials. Approximately 48 percent of the diversion is from <br />nearby arterials, including 15 percent from TH 51. The incremental change from the <br />second through-lane is 29 percent principal arterial and 35 percent minor arterial. <br /> <br />Based on this analysis, it can be concluded that either adding one lane or two lanes to 1- <br />35W would not serve a primarily regional function. Traffic growth would generally be in <br />the same proportion as the approximately 60 percent of Coalition area traffic on I-35W <br />under the baseline. <br /> <br />1-35Wlf-694ITH 10ITH 36 <br />Transportation Deficiency Study <br /> <br />-26- <br /> <br />SRF Consulting Group, Inc. <br />July 2002 <br />