Agenda - Council - 01/26/2021 - Laserfiche WebLink

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Riverstone South EAW Draft — December 2020 The northbound left -turning movement at the new Highway 10/Riverdale Drive intersection will experience future delays with and without the traffic generated by the proposed project. The cross - street traffic volumes predicted at this location do not meet signal warrants, so an at -grade, 3/4-access intersection is recommended. All other intersections are predicted to continue to operate acceptably through the 2040 build scenario. The Highway 10/Riverdale Drive intersection experiences excessive delays and queueing under the proposed side -street stop control operations during both AM and PM peak hours. All other intersections operate within acceptable bounds with no delays or queueing concerns arising through the 2040 build scenario. Additionally, all site corridors operate with volumes within their planning level capacities through the 2040 build scenario. c. Identify measures that will betaken to minimize or mitigate project related transportation effects. The Traffic Impact Study recommends construction of the Highway 10/Riverdale Drive intersection to a 3/4-access (Appendix G). This configuration removes the cross -street left turning movement (northbound left) from the intersection and improves the traffic operations to acceptable timing. This reduction in queueing and delay is a result of rerouting the highest delayed movement (northbound left turning movement) away from the Highway 10/Riverdale Drive intersection to alternative routes. Vehicles that would normally navigate northbound to westbound at this intersection would instead travel east on Riverdale Drive to the Armstrong Boulevard/Northern Highway 10 Ramps, where they would take a northbound left to proceed westbound. In total, roughly 2.25 miles would be added to their commute with this change. Very few trips are affected by the northbound left turning movement at this location. Existing traffic counts estimate that fewer than 60 vehicles complete this movement each day. Additionally, pedestrian and bicycle infrastructure upgrades are recommended with trail connections to existing facilities along Riverdale Drive east of Llama Street and the existing trail south of Highway 10 by Bowers Drive. 19. Cumulative Potential Effects Preparers can leave this item blank if cumulative potential effects are addressed under the applicable EA 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. It is anticipated that the project area will develop over the next 3 to 5 years, but the actual timing of development could vary depending on the demand for housing and market conditions. Seven other projects proposed in the City of Ramsey are expected to develop during this time period. These projects and their geographic locations are described under Item 19.b below. 30