Part 1 BOCC_Marion PBCP record - Laserfiche WebLink

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• Nelson Siding Road: This is a two-lane county road that parallels I-90 in the vicinity of the projects. Nelson Siding Road connects directly to 1-90 at Exit 74 (to the west) and via Golf Course Road at Exit 78 (to the east). 3.2 Existing Traffic Volumes The capacity of the local road network at locations determined to be significantly impacted by these developments was analyzed. Existing traffic volumes were collected at the locations listed in Table 1 below, and depicted in Figure 3 along with the average weekday PM peak hour (5pm to 6pm) traffic volumes. For additional traffic volume data, see Appendix A. Location Location # Description Northbound Southbound Total Nelson Siding Road 1 east of W. Nelson Rd 13 37 50 Nelson Siding Road 2 west of Westside Rd 38 34 72 3.3 Existing Trip Generation The existing uses at these project sites generate vehicle trips. The number of trips is calculated based on the 7th edition of the Institute of Transportation Engineers (ITE) Trip Generation Manual. ITE lists an average trip rate of 1.01 vehicle trip per unit for LUC-210, "Single -Family Detached Housing," for the weekday PM peak hour of adjacent street traffic (between 4p.m. and 6p.m.). The directional distribution is 63% entering and 37% exiting. These factors were used to calculate the existing trips included in Table 2 below. At the Marion-Springtree site, there is one existing residence. LUC-210 Distribution Vehicle Trips Single -Family Detached Homing In Out In Out Total MarionSpringtree location 63% 37% 3.4 Existing Intersection Operations Existing traffic conditions in the vicinity of the site are based on the tube count data described above and the assignment of the existing traffic according to the distribution shown in Figure 2. It was assumed that 30% of the traffic though tube count location #1 had an origin/destination past the Marion-Springtree site. From tube count location #2, 70% of the traffic though tube count location #2 was assumed to have an origin/destination past the Marion-Springtree site. Marion-Springtree Developments 3 Transportation Impact Analysis UV0090