Item 5 - PH on Laurel Hill Plan - Laserfiche WebLink

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Larson Property Traffic Impact Study Page Glenwood Drive to Laurel Hill Drive, is 24 £eet wide and consists of two travel lanes with curbs. The roadway continues west from Laurel Hill Drive as an unimproved oil-mat roadway. The intersection of Moon Mountain Drive and Laurel Hill Drive is controlled by an all-way STOP. Laurel Hill Drive is a local city street. North of Moon Mountain Drive it is an unimproved two-lane oil- mat roadway that provides a secondary connection to Franklin Blvd. via Augusta Street, 16~ Avenue, and Riverview Street. South of Moon Mountain Drive, it is improved to a 20-foot width with curbs and serves a growing residential area. b. Existing Traffic Volumes Turning movements counts were conducted by Access Engineering staff from 7 to 9 AM and from 4 to 6 PM at Glenwood Blvd.and Glenwood Drive/Moon Mountain Drive on November 12, 2003. A summary sheet for the count can be found in Appendix B. Traffic counts for the surrounding intersections, Glenwood Blvd. and the I-5 Northbound Ramps, Glenwood Drive and the I-5 Southbound Ramps, and Moon Mountain Drive and Laurel Hill Drive were obtained from the April 9, 2001 "Traffic Impact Study · for Sun Blaze Village" by JRH. Thc AM and PM peak hour counts from that study were updated based on the counts taken at the Glcnwood Blvd.and Glenwood Drive/Moon Mountain Drive intersection which feeds each of those intersections. Since the traffic count at Glcnwood Blvd. was taken in mid-November when traffic flow levels are generally low in comparison to the yearly average, a seasonal factor should bc applied. To convert thc November peak hour counts to a more representative volume, the 2002 ODOT Seasonal Factors Table was consulted. Thc nearest automatic traffic recorder (ATR) in the area is on the Eugene-Springfield Highway (ATR 20-008). The traffic on this route is taken as representative of seasonal patterns in the Eugene-Springfield metropolitan area. This station was used to find thc factors for the peak (minimum factor) period and the factors for the date of the traffic counts. The minimum factor (0.9122) was found to be on April 15t~. The factor for November 12~ was 0.9780, therefore the peak hour volumes at Glenwood Blvd. and Glenwood DrivefMoon Mountain Drive will be increased by the ratio of the factors; 0.9780/0.9122 = 1.07. Figure 2 in Appendix A shows the existing AM and PM traffic volumes respectively at the study area intersections. c. Mobility Standards According to the 1999 Oregon Highway Plan Mobility Standards, the maximum volume to capacity ration (V/C) for Glenwood Blvd ~ I-5 Northbound Ramps and for GlenwOod Drive ~ I-5 Southbound Ramps, intersections that are ramp terminals on local roads, is 0.85. For Glenwood Blvd. ~ Glenwood Drive, both local roads within the interchange right-of-way, the intersection consists of local interest roads in an MPO and therefore the V/C standard is 0.90. The intersection of Moon Mountain Drive with Laurel Hill Drive is under the jurisdiction of the City of Eugene. The adopted Transportation System Access Engineering December 1, 2003 II-B-30