Agenda - Public Works Committee - 11/19/2024

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Geotechnical Reports: On August 12, 2024 Ramsey City Council Resolution #24-220, awarded proposals for geotechnical services of five (5) proposed street reconstructions (IP 25-02; IP 25-03; IP 25-04; IP 25-05; IP 25-06) to Independent Testing Technologies, Inc. The geotechnical services, including the geotechnical report will be used to help determine the required pavement section, if any soil corrections will be anticipated, and if utility work will require special backfill or groundwater considerations. Staff has received all reports and has done an initial review, which determined the reports were complete and met the requirements of the proposals. Sewer Cleaning and Televising: On November 12, 2024 Ramsey City Council Resolutions #24-309; #24-310; #24-311 awarded proposals for sewer cleaning and televising for IP 25-02, IP 25-03, and IP 25-04 respectively, to Hydro-Klean, LLC. The proposals require the cleaning and televising to be performed within 30 working days of notice to proceed, which is generally anticipated to occur by mid -January 2025. Televising of sanitary and storm sewer allows staff to determine if damaged pipes exist within the project area, and allows them to be addressed with the larger street reconstruction project. Anticipated Project Scopes IP 25-02 Sunwood Drive Reconstruction: This project proposes to reconstruct Sunwood Drive between Nowthen Boulevard (CSAH 5) and Erkium Street. Sunwood Drive is a 40-foot-wide urban section with concrete curb and gutter, totaling 0.20 miles in length, with 5-foot wide concrete sidewalk on both sides of the street. The Average Daily Traffic (ADT) is 1,050. Sunwood Drive is a Municipal State Aid (MSA) street and must conform to MSA design standards, including meeting a 10-ton pavement design standard. Because the existing pavement section is only 4.2-inches of bituminous over 2.2-inches aggregate base (6.4-inch total section), the typical full -depth reclamation (FDR) process cannot be used to meet pavement strength design requirements. Staff is proposing to place 4-inches of new bituminous over 6-inches aggregate base. This will be achieved by removing the existing pavement and aggregate base, removing an additional 4-inches of subbase material, and placing 6-inches of new aggregate base and 4-inches of new bituminous pavement. The existing concrete curb and gutter is proposed to remain in -place with spot replacements, as well as pedestrian ramp improvements. In recent years, stabilized full -depth reclamation (SFDR) projects have been used to add strength and avoid excess subbase excavation. However, the minimum SFDR thickness is 4-inches, with 5- inches being more typical. In this case, achieving the minimum SFDR thickness would also require additional excavation, and no cost savings. Review of the geotechnical report found clean sands, ideal for both utility and pavement support within the project area. Additionally, groundwater is not anticipated to be a concern for the street reconstruction. Improvements to the existing municipal utilities are not anticipated. This will be confirmed with review of the televising reports. CIP level estimated project costs for IP 25-02 Sunwood Drive Reconstruction are $348,450 ($303,000 MSA Funds; $45,450 Stormwater Utility Funds). Any repairs to the sanitary sewer or watermain would be paid for with associated utility funds. IP 25-03 Alpine Drive Reconstruction: This project proposes to reconstruct Alpine Drive between Sunfish Lake Boulevard (CR 57) and Saint Francis Boulevard (TH 47). The actual project tie-in points are proposed to vary in distance from the adjacent County roads within the project, due to relatively recently completed Anoka County Highway Department traffic signal improvements. Alpine Drive between Sunfish Lake Boulevard (CR 57) and Nowthen Boulevard (CSAH 5) is 44-foot-wide urban section with an 8-foot bituminous trail on the north side of the street, and an 8-foot bituminous trail on the south side of the street on the western half of the area. The Anoka County signal upgrade at Sunfish Lake Boulevard from 2011, including turn lanes for westbound Alpine Drive, reconstructed approximately 460 linear feet of Alpine Drive east of Sunfish Lake Boulevard. The Anoka County signal upgrade at Nowthen Boulevard from 2014, including turn lanes for eastbound Alpine Drive, reconstructed approximately 660 linear feet of