Agenda - Council - 03/24/2015 - Laserfiche WebLink

Home

4. PROPOSED IMPROVEMENTS 4.1 Bituminous Pavement Overlays 4.1.1 Pavement Condition Evaluation/Ratings City staff typically evaluates and rates the pavement condition of all city streets on an annual basis using the Pavement and Surface Evaluation Rating (PASER) system. This requires someone to visually evaluate each pavement surface throughout the City based on the type, extent and severity of each pavement distresses 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. The types and severities of each pavement distress are then used to determine the PASER rating for each street, which is a numerical index between 1 and 10 that indicates the condition of a pavement based on the various pavement distresses recorded during visual observations. A PASER value of 10 represents a brand new pavement section, while a PASER rating of 1 represents a pavement section that has fallen into total disrepair and requires complete reconstruction. Once staff gathers the updated field data, it is then recorded in a Microsoft Excel pavement management database. This database is then used by staff to determine the most cost-effective pavement rehabilitation method for each street segment, and to schedule annual long-term Street Maintenance Program projects. 4.1.2 Project Area Selection Staff reviewed the existing PASER ratings database to identify all street segments throughout the City having PASER ratings of 3 or 4 since these are the best candidates for pavement overlay projects. These segments were then evaluated as to proximity and overall scope to determine which segments could be grouped together as this typically reduces bid prices related to equipment mobilization, which can account for 10% or more of the bid price. Several project areas were selected for overlay improvements as part of Division B of City Improvement Project No. 15-00. In total, approximately 494,000 square feet of pavement is proposed to receive overlay improvements. Exhibits A, B, and C in Appendix A show the location and scope of the proposed 2015 overlay improvements. 4.1.3 Other Considerations Driveways: Overlaying of existing residential driveway aprons will be needed to varying degrees with this project. The limits of each overlay will vary with each driveway based on the elevation of the street abutting the driveway apron, the driveway pavement condition and type, and the locations of existing driveway pavement joints. Feasibility Report 2015 Street Maintenance Program, Division B: Overlay Improvements City of Ramsey Project No. 15-00 Page 4