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wsB && assoc~ Engineering Memorandum Planning Environmental Construction To: Steve Stahmer City of Rogers City Administrator From: Bret A. Weiss PE, President City of Rogers City Engineer Date: June 2, 2011 Re: Calculation of annual benefit for the City of Elk River related to the removal of the CSAH l44/TH lOl at grade intersection 701 Xenia Avenue South Suite 300 Minneapolis, MN 55416 Tel: 763-541-4800 Fax: 763-541-1700 This memorandum provides additional detailed information related to the benefit that could be realized by City of Elk River residents by constructing an interchange at TH 101 and CSAH 144 in the City of Rogers. The City of Rogers is requesting funding participation and a letter of support from Elk River for this important regional project. We have estimated a $1.5 million local share of the estimated $22 million project cost that must be paid by the City of Rogers and our partners. We identified benefits including the reduction of crashes, reduced delay and increased economic development due to improved access to the City of Elk River. The CSAH 144 intersection is on the City of Rogers northern border and has limited impact to our residents and businesses from a delay and crash standpoint. The Rogers City Council is most interested in the improved safety and access to the school facilities but recognizes the regional benefit and is supportive of this project. It is difficult to quantify economic benefits associated with better access, so we are not trying to justify that number with this memo. A calculation of benefit related to crashes and delay is a much more recognized method. This memo only addresses the reduction in delay and crash costs that can be attributed to the volume of traffic passing through the intersection from the City of Elk River residents. Additionally, we only used Elk River residents using TH 101 for their work commute. We could have attempted to increase the number of trips using non-work related trips, but we wanted our analysis to be as defendable as possible for the City Council. Using only crash and delay savings for work related trips on TH 101, we have calculated an estimated annual savings to Elk River residents of approximately $221,600 /year.