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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 15 <br />Snelling Avenue North and County Road E - Street and Utility Improvements <br />City Project Number PW 20-0100 <br />structure at the low point of the road and the culvert extending into the drainage ditch along <br />Trunk Highway 51. <br />Proposed street improvements for the 100-foot section of Bussard Court include removal of <br />the pavement, reconstruction of the upper two feet of subgrade with granular and aggregate <br />base, replacement of damaged curb and placement of 4-inches of new bituminous pavement. <br /> <br />3.4 Utility Improvements: Area 1 – Snelling Ave N south of County Road E <br />Sanitary Sewer <br />Sanitary sewer along Snelling Avenue is located approximately 30 feet or more to the east <br />and west of the roadway pavement. The segment between Arden Place and Skiles Lane was <br />previously improved with a CIPP liner. Based on the recent condition evaluation <br />summarized in Section 2, the recommended sanitary sewer improvements are limited to <br />replacement of the 8-inch diameter crossing under Snelling Avenue at Skiles Lane east as <br />shown in Appendix D. This segment of sewer was originally constructed with a combination <br />of VCP and CIP pipe materials, which is believed to have been done as an alternative to <br />installing a steel casing pipe within the former State highway. The CIP section of pipe is in <br />a highly deteriorated condition. <br /> <br />Water Main <br />Under the Alternative 1 scenario (trail), water main along Snelling Avenue North would be <br />replaced with new ductile iron or PVC pipe due to the significant excavation and disturbance <br />required for construction of the trail and associated storm sewer system. <br /> <br />Under the Alternative 2 scenario (no trail), a majority of existing water main south of County <br />Road E is proposed to remain in-place. These segments of water main do not have a history <br />of water main breaks based on City records. Removal and replacement of water main <br />between Lametti Lane and Bussard Court is recommended to improve reliability of the water <br />supply feed from Cummings Lane, particularly for Bussard Court, which is supplied from <br />only one direction. A water main break between Bussard and Cummings Lane would disrupt <br />water service to 19 or more homes. The locations of water main improvements are indicated <br />in Appendix D. <br /> <br />Drainage <br />Snelling Avenue south of Arden Place is predominately a rural section roadway with little <br />storm sewer within the project area. Culverts are located under the adjacent streets and <br />driveways connecting to Snelling Avenue. <br /> <br />The addition of a pedestrian trail as described in Alternate 1 would require the installation of <br />a significant amount of curb and storm sewer to allow the trail to be located directly adjacent <br />to the road surface and minimize the amount of fill embankment within wetlands and steep <br />slope areas. <br /> <br />Rice Creek Watershed District (RCWD) requirements as outlined in Rule C apply to public <br />linear roadway projects. The proposed roadway improvements under Alternate 1, including
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