Agenda - Public Works Committee - 02/18/2020

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Appendix D The WSB pavement forensics report is included in of this report. The street segments were all constructed in 1994 through 1995, and in their 25 to 26-year lifespan have received 3 sealcoats and no overlays. Most of the streets within this neighborhood would still be a candidate for an overlay, in conjunction with full-depth patching, but not all. Staff does not recommend selectively completing overlay improvements on street segments within the same neighborhood, and does not support completing an overlay improvement on the Sunfish Square nd and Sunfish Square 2 neighborhoods at this time. With the limited financial resources of the City, Staff recommends maintaining the existing streets until such time as they have degraded to a level requiring reconstruction. 3.1.c Windemere Woods, Windemere Woods 2 nd neighborhood The existing right-of-ways along the street segments proposed in the 10-year CIP to receive overlays as part of this project generally are 60-feet in width. The paved street width is 31-feet as measured from the back-of-curb. All streets in this project were constructed with bituminous pavement and concrete curbing, and many of the street segments contain storm sewer. The street segments proposed to receive overlays in 2020 in the Windemere Woods and nd Windemere Woods 2 subdivisions had 2017 PASER ratings of 8, 2018 PASER ratings varied from 5 to 8, and 2019 ratings varied from 3 to 7. When visually inspecting the street segments in December, Staff felt there were large areas which would require full-depth patching, particularly Magnesium Street, which would require several hundred feet of full-depth patching and full curb and gutter replacement. WSB was employed to complete a pavement forensics, which included 4 pavement corings spread out among the street segments. Of the 4 corings, 2 were in good condition, 1 was in poor condition showing deterioration, and 1 was in very poor condition being severely deteriorated. The bituminous depth ranged from 2 to 3.25-inches thick, with 4 to 4.5-inches of aggregate below. The Appendix D WSB pavement forensics report is included in of this report. The street segments were all constructed in 1992, and in their 28-year lifespan have received 3 sealcoats and no overlays. Half of the streets are well beyond overlay improvements, while the other half could still be overlaid with bituminous patching. Staff does not recommend selectively completing overlay improvements on street segments within the same neighborhood, and does not nd support completing overlay improvements on the Sunfish Square and Sunfish Square 2 neighborhoods at this time. With the limited financial resources of the City, Staff recommends maintaining the existing streets until such time as they have degraded to a level requiring reconstruction. Feasibility Report Pavement Overlay Improvements City of Ramsey Project No. 20-02 4