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New Lake Elmo Elementary School & Oak-Land Middle School August 1, 2024 Transportation Study Page 23 The following information summarizes the operational and/or queuing issues identified as part of the year of opening (i.e. 2026 build) intersection capacity analysis. Note the following section summarizes the percentage of trips contributed to the roadway network by the school developments. 10th Street/Keats Avenue: o The intersection is expected to be overcapacity during the p.m. peak hour, with overall average delays of over three (3) minutes and maximum eastbound queues of 1/2-mile. o As mentioned previously, this intersection is programmed within the Washington County 2024-2028 Capital Improvement Plan for roundabout evaluation/preliminary design in 2027. o Recommendation: The County should execute their CIP and construct a roundabout at the intersection to improve operations and safety. 10th Street/Lake Elmo Avenue: <br />o The intersection is expected to operate at an unacceptable LOS E/F during the a.m., school departure, and p.m. peak hours. Eastbound queues are expected to be over 600 feet during all three peak hours, and westbound queues are expected to be over 1,500 feet during the a.m. peak hour. o As mentioned previously, while the intersection is below the average crash rate, there have been eight (8) crashes in the last five (5) years that involved vehicles running the stop sign or failing to yield right-of-way. o Recommendation: The County should consider constructing a traffic signal or roundabout at the intersection to improve operations and better delineate right-of-way. 10th Street/Lake Elmo Elementary Main School Access: <br />o The southbound approach (i.e. elementary school exit) operates at LOS F and is expected to have queues of 500 to 1,200 feet (25 to 60 vehicles) during the peak 30-minute windows before and after school start and end times. o Approximately 250 vehicles are expected to make a southbound left-turn movement during the a.m. peak hour, which presents a safety concern given the peak characteristics associated with the school, and the high-speeds (i.e. 55-mph) of the adjacent roadway network. In addition, gaps along 10th Street are expected to be limited, and drivers may accept smaller gaps and make more aggressive movements, which could increase the risk of a potential crash. o Recommendation: Construct a traffic signal or roundabout at the intersection to improve operations and safety.  Other options were considered, such as employing traffic control officers, restricting left-turns, or implementing staggered pick-up/drop-off schedules. However, high speeds on the roadway pose a safety concern for traffic control officers. Implementing access restrictions would force vehicles to travel three quarters of a mile to the 10th