Agenda - Council - 09/12/2017 - Laserfiche WebLink

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2. INTRODUCTION 2.1 Authorization The preparation of this report was authorized by the Ramsey City Council on August 8th, 2016. This project has been designated as City Improvement Project No. 17-00. 2.2 Program Overview In support of the City's long-term Street Maintenance Program, the existing bituminous pavement section is proposed to be reconstructed using a stabilized full -depth reclamation (SFDR) process, all damaged concrete curb and gutter sections will be removed and replaced, and other appurtenant work will be completed as outlined in this report. The City's pavement evaluation process involves a visual evaluation of each street's pavement surface based on the type, extent and severity of each pavement distress observed. Numerous types of pavement distresses may exist within a pavement section including, but not limited to, alligator cracking, block cracking, longitudinal cracking, transverse cracking, rutting, raveling, shoving, potholes and patches. This field data is then used to rate the pavement condition. The City uses the Pavement and Surface Evaluation Rating (PASER) system to rate pavement condition. A PASER rating is a numerical index between 1 and 10 indicating the condition of a pavement based on the various pavement distresses recorded during visual observations. A PASER rating of 10 represents brand new pavement, while a PASER rating of 1 represents a pavement section that has fallen into complete disrepair requiring full reconstruction. In the fall of 2016, this segment of Sunwood Drive was rated with PASER ratings of 3 and 4, depending on location. 2.3 Scope City of Ramsey Improvement Project 17-00 proposes to reconstruct the existing bituminous pavement, to remove and replace damaged concrete curb and gutter sections, and to complete other appurtenant work on Sunwood Drive between Ramsey Boulevard/CSAH 56 and Bunker Lake Boulevard /CSAH 116 which totals approximately 3,050 linear feet (0.58 miles) in length. The existing bituminous pavement is proposed to be reconstructed using a Stabilized Full Depth Reclamation, or SFDR, process. The SFDR process would involve milling roughly the top 3 inches of existing bituminous pavement and disposing of the millings off site. All remaining existing bituminous pavement would then be ground and mixed into the existing aggregate base. This reclaim material would then be spread over the existing subgrade, which will be reshaped and compacted as needed. A stabilizing agent, such as an asphalt emulsion, will be mixed into the reclaim material prior to shaping and compacting it. Four (4) inches of new bituminous pavement will then be placed on top of the stabilized reclaim material. This will result in a 10- ton pavement design meeting current State Aid pavement design standards. A map showing the location and scope of the proposed improvements is included as Figure 1 in Appendix A. Feasibility Report Sunwood Drive Reconstruction City of Ramsey Project No. 17-00 Page 3