Agenda - Council - 06/13/2017 - Laserfiche WebLink

Home

5. Conclusions and Recommendations The traffic impacts and operation of the proposed Capstone Homes Development were thoroughly studied and the principal findings are: • The proposed expansion is expected to generate approximately 2,912 new trips during an average weekday (1,456 entering and 1,456 exiting), approximately 227 new trips during the a.m. peak hour (53 entering and 174 exiting) and approximately 297 new trips during the p.m. peak hour (189 entering and 108 exiting). • The existing study intersections operate with acceptable delays and vehicle queues today with slightly increased queueing and delay at TH 10/Alpine Drive. • The study intersections are expected to operate acceptably during the 2040 no - build and build scenarios with the exception of TH 10/Alpine Drive. • TH 10/Alpine Drive experiences slightly higher than preferred queueing along Alpine Drive, however this is expected at side street stop controlled intersections with heavy mainline volume. • Left turn lanes are not warranted based on the expected 2040 build year volumes and mainline speeds. • Right turn lane warrants are not fulfilled due to the mainline speeds remaining below 45 MPH, which is consistent for neighborhood streets. • There are no safety concerns with regards to turn lanes, due to the low queues, minimal delay, and good sight distance provided at all site accesses The following recommendations are made based on the above findings: • No additional intersection mitigation is required to help improve capacity. However, the TH 10/Alpine Drive intersection should be monitored to determine when volumes breach the Eight -Hour Traffic Signal Warrant as the projected volumes are heavily dependent on a number of anticipated developments that are not guaranteed to occur. • Coordinate TH 10/Alpine Drive improvements with MnDOT once the Eight Hour Warrant is exceeded. • If the speed limits along Puma Street or Alpine Drive are increased to 45 MPH or higher, re-evaluate the Turn -Lane warrants. • Construct a new sidewalk/trail along the southern edge of Alpine Drive connecting the proposed access to the existing Alpine Drive/Puma Street intersection. The addition of a north/south crosswalk should also be considered at this intersection to help promote safe crossing to the existing northern sidewalk/trail. • Ensure the proposed internal sidewalks connect to the external sidewalk/trail system. • Work with Metro Transit or their affiliates to improve transit options within the project area as the closest existing transit is located roughly 1.5 miles away at Ramsey Station and Platform. Traffic Impact Study 13 Capstone Homes Residential Development NSULTIING