09-14-2020-R - Laserfiche WebLink

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3.2 Street Improvements—Lake Valentine Road The pavement condition along Lake Valentine Road is in fair condition. A resurfacing overlay would typically be implemented to preserve the roadway after 25 years since full reconstruction in 1995. However, the pavement is exhibiting distress in the form of lateral and transfer cracking along with minor rutting along the wheel paths. Lateral cracks along the road are heaving or tenting at isolated locations during the winter months as moisture is infiltrated under the pavement, freezes and creates intermittent bumps. Four core samples were collected along Lake Valentine Road as part of the pavement forensic analysis. Core samples are characterized in good condition with a top wear course layer thickness of 2-inches. However, the analysis indicates that recycled aggregate material in the road base may be the root cause of the formation of cracking as well as the tenting of the transverse cracks. Full depth reclamation(FDR)is recommended as a long-term solution to this problem. The scope of an FDR along with the additional effort to address the aggregate base material has significantly increased the cost of the proposed improvements from the original scope of a resurfacing overlay. Based on the above information, staff is recommending that improvements to Lake Valentine Road are not included in the proposed 2021 PMP Street and Utility Improvements. While the tenting that occurs along isolated lateral cracks degrades the ride quality, the existing pavement has valuable remaining service life. It is recommended that street improvements for Lake Valentine Road be rescheduled for the year 2028 and that staff conduct further analysis to determine the full extent of necessary repairs to the aggregate base material under the pavement. Public Works crews can complete patching repairs to the significant transverse cracks during the interim period to improve ride quality. 3.3 Sanitary Sewer Based on the existing conditions of the sanitary sewer system within the Hazelnut Park Neighborhood, the proposed sanitary sewer improvements include salvaging and resetting manhole castings, minor manhole repairs, and replacement of one manhole structure on Glenpaul Avenue. Proposed sanitary sewer improvements also include repairs to sanitary sewer services at 19 locations as shown on Appendix E where service connection joints have separated or significant root intrusion was noted during the pipe inspection. The cost of these sewer service repairs are included in the cost estimate provided in Section 5 below. The project cost estimate includes expenses for installing a cured in place pipe (CIPP) liner within the 18-inch and 21-inch diameter sanitary sewer along Prior Avenue and Hazelnut Park, which has been in service for approximately 60 years. The cost estimate also includes installation of CIPP lining for the sewer main along Lake Valentine Road, although this work should be incorporated into the biannual pipe lining projects prior to roadway improvements, if the Council schedules Lake Valentine Road for a later year in the Capital Improvement Program. Feasibility Report Page 7 2021 PAP Street and Utility Improvements City Project Number PW 21-0100