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Debra Bloom, Assistant Public Works Director/City Engineer City of Roseville January II, 2007 Page 4 Lincoln A venue/Lvdia Avenue . Based on a planning level critical lane calculation, this intersection is handling volumes that exceed its design capacity, with approximately 1,010 vehicles per hour (prior to recommending improvements). The typical capacity threshold for an unsignalized intersection is approximately 700 vehicles per hour. . The Master Plan recommends the following improvements: o Outbound right-turns and inbound left-turns to/from the west will be directed to use the Northwestern College west gate access during the p.m. peak hour, the existing westbound left-turn lane at Lincoln Avenue will be converted to a left/through lane and an exclusive westbound right-turn lane will be constructed. o With these improvements, the intersection is still expected to operate at an unacceptable overall LOS E. Additional mitigation should be provided to improve the intersection to an acceptable level of service. This may involve restricting all outbound access at this location during the p.m. peak hour, routing all vehicles internally to the Northwestern College west gate access. Snelling Avenue/Lydia Avenue and Snelling Avenue/County Road C2 . The Master Plan recommends extending the eastbound left-turn lanes. While this does lessen the queuing impacts along Lydia Avenue, it will not increase the intersection capacity and does not improve the overall intersection operations. At a minimum, comments should be made that only high cost major improvements would improve the operations to an acceptable level of service. . The dual eastbound left-turn lanes continue to have protected-pelmissive phasing during the a.m. and p.m. peak hours. This is an unsafe condition and is not typical of dual left turn- lanes. H:\Traffic\5953\RepOlt\5953 NW College TS Review.doc