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04-12-21-R
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04-12-21-R
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<br /> <br />Feasibility Report Page 12 <br />Snelling Avenue North and County Road E - Street and Utility Improvements <br />City Project Number PW 20-0100 <br /> <br />Alternative 1 proposes to narrow the roadway from 40 feet to a width of 28 to 34 feet within <br />the center section, install curb and storm sewer, and placement of the trail alignment directly <br />adjacent to the west curb line in an attempt to minimize substantial tree removal, minimize <br />large volumes of cut and fill grading, and avoid impacts to delineated wetlands. A similar <br />trail alignment was used along Snelling Avenue to the north of County Road E. <br /> <br />The advantages of Alternate 1 include completion of a segment of regional trail and <br />providing a dedicated facility for pedestrian and bicycles along the road corridor currently <br />posted at 40 mph. Pedestrians currently walk along the 8 -foot wide paved shoulder. The <br />disadvantages of Alternate 1 include a substantial increase in project costs, increased scope <br />and construction timeline for installation of curb and storm sewer, increased risk of <br />encountering areas of soil contamination during storm sewer installation, and use of limited <br />city funds compared to higher priority trail segments to the north of County Road E. <br /> <br />Alternative 2 - FDR Pavement Replacement (no trail): This alternative consists of <br />reclaiming the existing surface pavement by milling the bituminous pavement material and <br />blending it with the upper portion of the underlying aggregate base, commonly referred to as <br />full depth reclamation (FDR). Approximately 4-inches of reclaimed material would then be <br />removed to maintain the existing vertical profile of the road, and a new 4-inch thick <br />bituminous pavement section would be placed to the existing 40-feet road width, including <br />two 12-foot travel lines and two 8-foot wide paved shoulders. Edge line pavement markings <br />would be installed to delineate the pavement shoulders. <br />A schematic layout of the proposed roadway and trail improvements for Alternative 2 is <br />provided in Appendix H. The advantages of Alternate 2 include a shorter construction <br />timeline, lower project costs, focus of limited capital funds for trail segments north of County <br />Road E, and reduced risk of encountering contaminated soil conditions. The disadvantages <br />of Alternative 2 would include maintaining the current condition where bicyclists and <br />pedestrians continue to use the 8-ft wide paved shoulders without the benefit of a dedicated <br />multiuse trail facility south of County Road E. <br /> <br />Council Consideration: The City Council reviewed the two roadway alternatives described <br />above during two work sessions on July 20, 2020 and December 21, 2020. The Council <br />discussed the cost differential between the two alternatives in relation to the City’s limited <br />availability of capital improvement funds. The Council also discussed the higher priority <br />currently placed on recreational trail segments along Snelling Avenue North from County <br />Road E2 to Lake Valentine Road and the connection to Mounds View High School. While <br />not ideal, the roadway south of County Road E does have 8-foot wide shoulders to provide <br />some accommodation for pedestrians and bicyclist. <br /> <br />
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