2019.08.07 EDC Packet - Laserfiche WebLink

Home Browse Search

Traffic Impact Study 4 New Brighton Exchange Update Table 1 – Existing Intersection Sight Distances for Passenger Vehicles 1Looking through some vegetation in the median. 2Can see past 14th St, but briefly lose view of outside lane due to curve and vegetation. If pulled slightly past stop bar, driver does not lose view at all. 3Shrubs at intersection block view when vehicle is behind stop bar. Pulling into the crosswalk, sight distance increases to 13.4 seconds. 4Business sign blocks view when vehicle is behind stop bar. Pulling into the crosswalk, sight distance increases to 10.5 seconds. As shown in Table 1, most approaches to Old Highway 8 in the study area have more than 7.5 seconds of sight distance, meaning they have adequate sight distance to find an appropriate gap to turn onto Old Highway 8. The exceptions are at the Northwest Parkway intersection due to obstructions at the intersection. Vegetation on the west side and a business sign on the east side require drivers to pull into the crosswalk to have adequate visibility of oncoming traffic. It is recommended that those sight obstructions be trimmed or moved to allow for proper sight distances without requiring vehicles on the side streets to pull into the crosswalks. d. Traffic Volumes Intersection video was collected at the three side street stop-controlled study intersections under normal weekday conditions in May 2019. Using these videos, 48- hour turning movement counts were obtained at the study intersections. The data from the two days was averaged to provide the base traffic for a “typical weekday”. It is noted that these counts were conducted during the time when a MnDOT MNPASS project was under construction on I-35W. It is anticipated that some of the I-35W traffic is routing through New Brighton along Old Highway 8 during this construction , meaning the through volumes on Old Highway 8 are increased at these three central intersections. At the Old Highway 8/10th Street intersection, the 13-hour turning movement count from the 2014 TIS was used. Using the growth rate from the 2014 TIS, this count was factored up to represent a 2019 volume. Location Direction Looking Measured ISD (seconds) Eastbound 14th St at Old Hwy 8 Left (to the north) 12.6 Right (to the south) 20.71 Westbound 14th St at Old Hwy 8 Right (to the north) 14.8 Left (to the south) 20.3 Eastbound Central Park Blvd at Old Hwy 8 Left (to the north) 16.12 Right (to the south) 9.5 Westbound Central Park Blvd at Old Hwy 8 Right (to the north) 26.9 Left (to the south) 12.2 Eastbound Northwest Pkwy at Old Hwy 8 Left (to the north) 9.9 Right (to the south) 5.1 (13.4)3 Westbound Northwest Pkwy at Old Hwy 8 Right (to the north) 4.4 (10.5)4 Left (to the south) 9.6