2017.04.17 CC Packet - Laserfiche WebLink

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Adelaide Landing Residential Development EAW, Hugo January 31, 2017 From a safety perspective, an evaluation of the existing posted speed limit of 50 mph is recommended for both directions along 130th Street from TH 61 to Goodview Avenue following development. o The City of Hugo would require a speed study be completed by MnDOT before any speed reduction would take place. 2040 Build Condition TH 61 & 140th Street operates at LOS-F in the p.m. peak hour, and TH 61 & 130th Street operates at LOS-E in both the a.m. and p.m. peak hours. Both intersections are impacted by the lack of available through capacity along the two-lane section of TH 61. o The improvements recommended in the year 2020 conditions are assumed to be completed prior to 2040. o Reconstruction of TH 61 to a four -lane section with turn lanes in this area will improve traffic operation to LOS-C or better at all study area intersections along TH 61. o The eastbound left turn movement of 140th Street at TH 61 operates at LOS-F in the unmitigated scenario. By creating a dedicated eastbound left turn lane and installing lead -lag left turn signal timing at that intersection, traffic operation will improve. o Because so much signal timing must be allotted to the north -south movements on TH 61, the side street and turn movement timings fail at 130th Street. The four -lane improvements along TH 61 will improve signal operation and overall intersection performance along the corridor. o The westbound left turn movements at TH 61 & 134th and at 137th Streets operates at LOS-F in the p.m. peak hour. This is primarily due to the heavy northbound traffic flow and the inability for side street traffic to find adequate gaps in the traffic to complete their left turns. This may be mitigated by restricting left turns in the p.m. peak hour as a safety and operation measure. The increased delay and operational issues identified will impact driver safety. Therefore, the need for widening of TH 61 to four lanes with turn lanes should be reviewed regularly from a safety standpoint. o MnDOT and Washington County entered into a Memorandum of Understanding (MOU) in 2008 related to the long-term future of TH 61. The improvements recommended above are not currently in MnDOT's 20-Year Plan. If not reviewed and modified following the 2020 Build Condition, an evaluation of the posted speed limit of 50 mph is recommended for both directions along 130th Street from TH 61 to Goodview Avenue following development. o The City of Hugo would require a speed study be completed by MnDOT before any speed reduction would take place. 19. Cumulative potential effects: (Preparers can leave this item blank if cumulative potential effects are addressed under the applicable EAW Items) a. Describe the geographic scales and timeframes of the project related environmental effects that could combine with other environmental effects resulting in cumulative potential effects. 35