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Unimproved Street System <br />549centerline miles of improved and unimproved <br />streets. The unimproved portion of this total includes 52 centerline miles (90lane miles) of <br />asphalt and bituminous surface streets. This section of the report is intended to describe the <br />overall condition of unimproved asphalt streets, potential treatment needs, associated <br />rehabilitation costs, along with a projected backlog repair cost for addressing this classification <br />of street. It is important to note that any treatment short of being brought up to full urban street <br />standards should be considered temporary. The estimated cost to improve this classification to <br />meet the urban street standards is approximately $60 million. In addition, the following backlog <br />figure is separate from the improved street backlog figure. <br />Based on 2017 rating data of the unimproved street system there is a backlog of temporary repair <br />projects, typically maintenance overlays, totaling an estimated $3.10million, down from $3.62 <br />million reported in 2016.The following charts and graphs indicate that 68 percent of the system <br />falls into a no treatment category, up from 64 percent reported in 2016, due in large part to recent <br />maintenance overlay and FDR treatments completed over the past several years. Approximately <br />116unimproved streets have benefited from full or partial treatment since 2008. Seventeen <br />orks <br />Maintenance plans on spending $200,000 annually to address a portion of these streets. <br />2017 Unimproved Asphalt Street <br /> Condition and Rehabilitation Report <br />(2017 Rating Data) <br />Rehabilitation <br />PCILane Miles% of SystemConditionUnit Cost/SQFT *Treatment ** <br />Cost <br />0-100.80.8%Poor$144,461$3.00FDR <br />11-205.15.7%Poor$809,424$2.50FDR or 2"AC <br />21-309.510.6%Poor$905,731$1.501.5"-2" AC <br />31-404.85.3%Fair$451,440$1.501.5"-2" AC <br />41-505.25.8%Fair$491,357$1.501.5"-2" AC <br />51-601.21.4%Fair$117,850$1.501.5"-2" AC <br />61-651.92.1%Fair$181,526$1.501.5"-2" AC <br />66-704.24.7%Good$0$0.00No Treatment <br />71-802.93.3%Good$0$0.00No Treatment <br />81-859.010.1%Good$0$0.00No Treatment <br />86-909.310.3%Excellent$0$0.00No Treatment <br />91-10039.9%Excellent$0$0.00No Treatment <br />35.7 <br />Total <br />$3,101,789 <br /> <br />** Example <br />Rehabilitation <br />* Unit cost based <br />treatments. Actual <br />89.6100.00% <br />on recent project <br />treatment would <br />costs <br />need further analysis. <br />22 <br /> <br />