1998 Planning Commission Packets

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Mr. Robert Cunningham -14- January 27, 1998 • Spacing of Walgreens access on County Road I The Walgreens access on C.R. I is located approximately 200 feet east of the T.H. 10 intersection. Accounting for the. Walgreens development in 1999, the average p.m. peak hour westbound queue per cycle at the T.H. 10 intersection will be four cars per lane. Si.te: observations indicated that a significant number of westbound vehicles are able to turrz right during the red signal. As a result, the queue in the left-through lane is typically twic� as long as the queue in the right-through lane. A maximum required queue length is generally twice the average queue. For this intersection location, the maximum queue length, including vehicles from the Walgreens development, is about eight vehicles per lane per cycle or a queue length of about 180 feet. There is an additional 20 feet before reaching the access of the Walgreens store, so the spacing between the two locations is adequate and will not create a vehicle stacking problem. The spacing between the Walgreens access on County Road I and the T.H. 10 intersectiar� is a significant improvement compared to the e�cisting Eastwood Drive access. Tl�� existing Eastwood Drive intersection is approximately 30 feet from the edge of T.H. 10, whereas the Walgreens access will be 200 feet. After completion of the Walgreens development, the T.H. 10 intersection will operate more effectively since vehicles on County Road I will no longer have to compete with the potential conflicts and delays created by vehicles using Eastwood Drive. • Operation and Spacing of Right in / Right out access on T.H. 10 The vehicle activity expected at this access is approximately 14 vehicles inbound and 14 vehicles outbound in the p.m. peak hour. The outbound traffic will not have any difficulty exiting the site on to T.H. 10 since the signal at the County Road I intersection creates ample gaps in the northbound traf�ic. The width of this access road should be 30 feet as recommended by the ITE to adequately serve the development's traf�ic needs. The spacing of this access from County Road I is approximately 242 feet (center line to center line). An examination of the access spacing along T.H. 10 for other developments and intersections found a varied range starting from a minimum of 190 feet for a daycare development located in the northwest corner of the Silver Lake Drive intersection. Typical spacing appears to be from 240 to 300 feet between access points. The access is not expected to have a significant adverse impact on the operation of T.H. 10 because the spacing is consistent with other locations on T.H. 10 and because the volumes using this access are not high enough to cause congestion. Conversations with MnlDOT staff indicate that they will normally grant right turn only access on T.H. 10 for properties that are adjacent to the roadway. The proposed Walgreens right turn in/out access is consistent with the access guide(ines used by Mn/DOT for T.H. 10. Mn/DOT staff have indicated that they do not anticipate any problems in granting this right turn in and out only access for the Walgreens site. Based on