Agenda - Council - 01/11/2022 - Laserfiche WebLink

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Trott Brook Crossing EAW Traffic Study Review January 6, 2022 Site Plan Review A review of the proposed development site plan was completed to identify any issues and provide potential improvements for consideration with regard to sight distance, access, and circulation. Based on this review, it is recommended to limit any sight distance impacts from future landscaping and signing at street corners within the neighborhood. As the site plan is refined, vehicle turning paths should be reviewed to ensure trucks (delivery, refuse) are able to navigate the development site. Internal roadway traffic controls should include side -street stop controls along side -streets to 173rd Avenue. Other internal roadways can either be side -street stop or uncontrolled, depending on City preference. Summary and Conclusions The following study conclusions and recommendations are offered for consideration: 1) Results of the existing intersection capacity analysis indicate that the study intersections currently operate at an acceptable overall LOS A during the a.m. and p.m. peak hours with the existing geometric layout and traffic controls. No significant queuing issues were identified. 2) The proposed development includes a 270 single family housing development. a. Access to the development is proposed to be constructed on Variolite Street NW approximately 500 feet north of 169th Lane NW. A second access will be shared with the adjacent North Brook Meadows housing development on 173rd Avenue NW. b. The North Brook Meadows housing development is an adjacent development of 77 single family homes. 3) The proposed Trott Brook Crossing development is expected to generate approximately 200 a.m. peak hour, 267 p.m. peak hour, and 2,549 daily vehicles trips. 4) The adjacent North Brook Meadow development is expected to generate approximately 57 a.m. peak hour, 76 p.m. peak hour, and 727 daily vehicles trips. 5) Results of the year 2026 and year 2040 no build capacity analysis indicate that the study intersections are expected to continue operating at an acceptable overall LOS B or better during the a.m. and p.m. peak hours. a. During the year 2040 no build p.m. peak hour, the side -street delays at the Nowthen Boulevard NW and Ramsey Boulevard NW intersection are expected to reach a LOS E, 43 seconds, and side -street delays at the Nowthen Boulevard NW and 167th Avenue NW intersection are expected to reach a LOS E, 48 seconds. b. Delays of this magnitude are not uncommon for side -street approaches in developing or developed areas. 6) No roadway changes or mitigation are anticipated to be needed to accommodate the background traffic forecasts from an intersection capacity perspective. Page 20