03/13/2017 City Council Agenda - Laserfiche WebLink

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Unimproved Street System The City's transportation system consists of 543 centerline miles of improved and unimproved streets. The unimproved portion of this total includes 52 centerline miles (90 lane miles) of asphalt and bituminous surface streets. This section of the report is intended to describe the overall condition of unimproved asphalt streets, potential treatment needs, associated rehabilitation costs, along with a projected backlog repair cost for addressing this classification of street. It is important to note that any treatment short of being brought up to full urban street standards should be considered temporary. The estimated cost to improve this classification to meet the urban street standards is approximately $60 million. In addition, the following backlog figure is separate from the improved street backlog figure. Based on 2016 rating data of the unimproved street system there is a backlog of temporary repair projects, typically maintenance overlays, totaling an estimated $3.62 million, up from $3.32 million reported in 2015. The increase is due to rising construction costs and deteriorating conditions. The following charts and graphs indicate that 64 percent of the system falls into a no treatment category, up from 59 percent reported in 2015, due in large part to recent maintenance overlay and FDR treatments completed over the past several years. More than 100 unimproved streets have benefited from full or partial treatment since 2008. Twenty percent of the system falls into the "poor" category. As funding allows, Public Works Maintenance plans on spending $200,000 annually to address a portion of these streets. 2016 Unimproved Asphalt Street Condition and Rehabilitation Report (2016 Rating Data) PCI Lane Miles % of System Condition Rehabilitation Unit Cost S FT * Treatment ** Cost 0-10 1.6 1.80% Poor $312,810 $3.00 FDR 1120 5.90 6.5% Poor $929,352 $2.50 FDR or 2"HMAC 21-30 10.4 11.5% Poor $984,802 $1.50 1.5"-2" HMAC 31-40 5.0 5.6% Fair $476,535 $1.50 1.5"-2" HMAC 41-50 5.1 5.6% Fair $482,976 $1.50 1.5"-2" HMAC 51-60 1.6 1.8% Fair $151,774 $1.50 1.5"-2" HMAC 61-65 3.1 3.4% Fair $290,289 $1.50 1.5"-2" HMAC 66-70 3.3 3.6% Good $0 $0.00 No Treatment 71-80 3.7 4.1% Good $0 $0.00 No Treatment 81-85 6.1 6.8% Good $0 $0.00 No Treatment 86-90 3.8 4.2% Excellent $0 $0.00 No Treatment 91-100 40.6 45% Excellent $0 $0.00 No Treatment Total Rehabilitation $3,628,529 * Unit cost based on recent project costs ** Example treatments. Actual treatment would need further analysis. 90.1 100.00% 24