9.1. SR 07-18-2016 - Laserfiche WebLink

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5. Conclusions and Recommendations The traffic impacts of the creating a cul-de-sac of Line Avenue between Main Street/181St Street and Twin Lakes Road as well as the potential to recognize the dominant east -west movement on 5th Street were analyzed. The principle findings based upon this evaluation and analysis are: • The study intersections all have satisfactory overall operations today. The eastbound left turn movement on Line Avenue at the intersection with Twin Lakes Road/Line Avenue has an individual movement LOS E during the p.m. peak hour. • The existing volumes for the intersection of Twin Lakes Road/181St Avenue do not satisfy any signal warrants. • Three alternatives for Line Avenue include Alternative A, disconnection between the intersections with Twin Lakes Road and 5t" Street, Alternative B, disconnection between the intersections with 5th Street and 3rd Street, and Alternative C, disconnection between the intersections with 3rd Street and Main Street/181 st Avenue. • With the shifts in existing volumes, the three alternatives have overall acceptable operations, except for the Twin Lakes Road/Line Avenue intersection during the p.m. peak hour under Alternatives B and C. • The potential mitigation of a southbound left turn lane/eastbound right turn or a single -lane roundabout at the Twin Lakes Road/Line Avenue intersection improves the operations under any scenario. However, although better than without mitigation, the eastbound left turn/through movements have LOS F operations during the p.m. peak hour under Alternatives B and C. • Alternative A represents the most impact to cut -through traffic on Line Avenue and least impact to other routes with origins and destinations within the study area. • Alternative C represents the least impact to cut -through traffic on Line Avenue and most impact other routes with origins and destinations within the study area. • Although Warrants 2 and 3 are satisfied using shifted volumes at the intersection of Twin Lakes Road/181St Avenue under any Line Avenue alternative, traffic operations suggest a traffic signal is not justified. It is likely that additional development and traffic growth in the area will increase delays and satisfy the criteria for Warrant 1 in the near future. • Warrants for a traffic signal or all -way stop control at the 5t" Street intersections with Dodge Avenue and with Line Avenue are not satisfied with existing volumes and unlikely to be satisfied with shifted volumes under any Line Avenue alternative. • Changing the geometry and repositioning the side -street stop control to recognize the east -west flow on 5t" Street would have acceptable operations with existing traffic or with shifted traffic under any Line Avenue alternative. • A roundabout is an option only with existing traffic at the Line Avenue/5t" Street intersection. At the other 5t" Street intersection and under the Line Traffic Operations Study 12 Line Avenue in Elk River