2017.04.17 CC Packet - Laserfiche WebLink

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Adelaide Landing Residential Development EAW, Hugo January 31, 2017 intersection of 130th Street and TH 61 is signalized, but also because 130th Street is slated for future improvements to collector standards. As background traffic builds, signalization may be warranted in the future at TH 61 & 137th Street N. Further, signal timing modifications may be warranted at the existing signalized intersections of TH 61 at 130th Street N. and at 140th Street N. Both intersections are part of an actuated coordinated signal timing plan along TH 61, which cycle lengths of 160 seconds during the a.m. peak and 150 seconds in the p.m. peak. Short term demand (to year 2022) operating under existing signal timings will operate acceptably, but as traffic builds to year 2040, the increased traffic demand will cause side street approaches to operate unacceptably. Therefore, MnDOT may consider modifications to signal timings along TH 61. Widening to four lanes with turn lanes may become necessary at some point prior to 2040, as traffic volumes along TH 61will increase to unacceptable levels of operational performance. Although not programmed, that reconstruction, as well as revised signal timings at 130th and 140th Streets may be modifications MnDOT and others should consider. c. Identify measures that will betaken to minimize or mitigate project related transportation effects. The Adelaide Landing development has been designed to incorporate curvilinear alignment to streets. This will reduce traffic speeds and encourage driver safety. Further, no residential units abut TH 61 or 130' Street North, so as to segregate residential neighborhood traffic from arterial traffic. Existing signal timings operate acceptably at the signalized intersections for the year 2020 scenarios. As background traffic builds to year 2040, signalization may be warranted in the future at TH 61 & 137th Street N. Further, signal timing modifications will likely be warranted at the existing signalized intersection of TH 61 & 130th Street N and at 140th Street N by year 2040. A mitigation plan has been included in the traffic impact study that include strategies that will accommodate the proposed development plan now and in the future. MITIGATION STRATEGIES Existing Condition No intersection operates below LOS-D, therefore no mitigation is recommended. No traffic safety issues are apparent, therefore no safety mitigation is recommended. 2022 No -Build Condition No intersection operates below LOS-D; however, TH 61 & 140th Street experiences excessive delay in the eastbound direction and excessive queuing in the northbound direction and southbound left direction during the p.m. peak hour. These can be mitigated by geometric and signal timing improvements 33