5.13. SR 11-15-2004 - Laserfiche WebLink

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Mr. Ronald Dokken -3- September 13,2004 OTHER PLANNED FUTURE DEVELOPMENT To adequately account for all traffic that would use the subject intersections in the analysis year, we obtained from the City information regarding other planned future development in the area that is expected to occur by 2007. We understand that a retail development is expected to occur in the southwest quadrant of the TH 169/Main Street intersection by 2007. We completed a traffic study for this retail development earlier this year. Traffic that will be generated by this development is included in the background volumes for the analysis year presented in this report. TRAFFIC FORECASTS Trip Generation Weekday p.m. peak hour trip generation for the Wal-Mart store with the proposed expansion was estimated based on data presented in the Institute of Transportation Engineers' Trip Generation, Seventh Edition, 2003. Using our existing counts at the site driveways, we determined existing trip generation for the Wal-Mart store. The existing trip generation for the Wal-Mart store was subtracted from the trip generation estimates for the expanded store that were developed using the lIE rates to determine trips that the proposed expansion alone will generate. From these steps, we determined that the proposed expansion will generate a total of 103 trips (97 entering and 6 exiting) during the p.m. peak hour. With this proposed expansion, the new expanded store will generate a total of 834 trips (409 entering and 425 exiting) during the weekday p.m. peak hour. Trips due to the proposed expansion can be divided into the following two trip types: . New trips - trips solely to/from the proposed expansion . Diverted trips - existing through trips on TH 169 and Main Street that will stop at the proposed expansion in the future. Based on data published by the ITE, we expect that 70 percent of the trips due to the proposed expansion will be new trips and the remaining 30 percent of the trips will be diverted trips. Trip Distribution and Assignment Normally, we develop trip distribution percentages for the proposed development trips based on expected traffic patterns for the future trips. In this case, we expect that trips due to the proposed expansion will follow the patterns similar to the existing trip patterns at the subject intersections. Therefore, our projected trips for the proposed expansion were assigned to the subject intersections based on existing traffic patterns at these intersections.