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<br /> <br /> STAFF REPORT <br /> <br /> <br /> <br />TO: Mayor Keis and Members of the City Council <br /> <br />FROM: Mark D. Kasma, P.E., City Engineer <br /> <br />DATE: December 2, 2020 <br /> <br />RE: Feasibility Report for 2021 Street Improvements <br /> <br />ACTION TO BE CONSIDERED: <br />Motion to accept feasibility report and call for a public improvement hearing for street <br />improvements on Greenbrier Circle and Old County Road C from County Road C to Ruth Street. <br /> <br />BACKGROUND: <br />Greenbrier Circle and Old County Road C are in the City’s five-year Capital Improvement Plan. <br />Greenbrier Circle was originally constructed in 1974. Old County Road C was formerly the <br />route for County Road C. County Road C was re-routed in the late 1970s and Old County Road <br />C was upgraded at that time, but the exact date is unknown. Both roadways are deteriorated <br />beyond the point of a mill and overlay. <br /> <br />The proposed improvements consist of reconstructing both roadways and the addition of <br />concrete curb and gutter. Other improvements include excavating water main appurtenances <br />(gate valves, tees and hydrants) to replace bolts, sanitary sewer manhole adjustments and <br />infiltration and inflow repairs, storm sewer improvements and possible addition of rain gardens. <br /> <br />Also, as a part of the reconstruction process, the pavement width will be reduced from 29 feet <br />wide to 26 feet wide measured face of curb to face of curb on Greenbrier Street. Old County <br />Road C varies from 26’-28’ wide and is proposed to be reconstructed to 26 feet wide measured <br />face of curb to face of curb. The street width reduction is recommended due to the low volume <br />nature of the roadways and can provide the following long-term benefits: <br /> <br />• Construction cost savings (estimated at $8,300 for Greenbrier Circle and $8,000 for Old <br />County Road C) <br />• Long-term maintenance cost savings (crack sealing, mill & overlay, etc.) <br />• Reduced impervious surface results in reduced stormwater treatment requirements and <br />associated costs <br />• Additional space for roadside turf and rain gardens <br />• Additional space for snow storage <br />• Reduction in volume of snow removal <br />• General traffic calming and speed reduction <br /> <br /> <br />