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<br /> CIP Discussion . <br /> 1/18/2007 <br /> Page 2 <br /> 2007-2011 Proic:.cts <br /> PavemcntMarragement Program (PMJj <br /> At the May Work Session, stafl presented preliminary results (i-om GoodPointc <br /> Technology in relation to the City's pavemcnt managcment and maintenance. Council <br /> indicated that of the scenarios prescnted, sccnario 3, hascd on the desirc to increase the <br /> overall PCI (Pavement Condition Index) rating to 75. was most desirahle. Stafl has <br /> proceeded to detcnninc PMP projects for thc next five years that incorporates <br /> GoodPointe's recommendations. Attached is a map with proposed improvements over <br /> thc next five years. <br /> Staff considered GoodPointe's suggcstions ft)r improvements in conjunction with the <br /> following factors: whether the street has concrete curh and gutter, and the needs fix <br /> watemlain, sanitary sewer or storm sewer improvements. Staff also visually inspccted the <br /> strects to confiml or revise the recommended maintenance strategy. Many of the streets <br /> that were listed as mill and overlay candidates wcre streets that do not have curh and <br /> gutter, arc at least 30 years old and likely have thin layers of bituminous with an <br /> insutlicient basc. lrthcse streets were milled, it is likely that the milling procedure would <br /> result in the removal of the asphalt in its entircty, exposing the insuflicient suhgrade, . <br /> requiring the scope of the project to change from a mill and overlay to a complete <br /> reconstruct. These strects often wcre also found to have little to no storm sewer and poor <br /> drainage duc to the lack of curb and gutter. While stall felt that several of thesc streets <br /> wcrc not candidates tt)r mill and overlay, the pavcmcnt condition \vas found to be <br /> suitahle f<)r a scalcoat. Sealcoating these streets would extend the life of the pavemcnt <br /> long enough so that we could address strcets that arc candidatcs t()r mill and overlays and <br /> do havc curb and .b'Utter and a sufficient suhgradc. As with all sealcoats. somc minor <br /> maintenance would be required, such as crack scaling, patching, and leveling. <br /> Historically, streets have been sealcoated one to two years after n:construction or mill and <br /> overlay. GoodPointe's analysis did not use this philosophy: recommendations tor <br /> sealcoating occurred when the PCI of a street indicated the need ttH" minor maintenance. <br /> Staff utilized this intonnation, as well as visual inspections, to detennine which strcets <br /> were good candidates for sealcoats. <br /> During the visual inspection of the streets, staff found that son1e strcets with concrete <br /> curb and gutter that were listed as mill and overlay candidates had more distresses than <br /> typically recommended for a mill and overlay. The cracks and distresses present would <br /> reflect through the overlay within a few years after paving. Soil borings can he taken to <br /> dctermine thc presence of a sufficient base. If one exists, these stret'ts are good candidates <br /> f()r full pavement replacement. This is a procedure where the base and curb and gutter <br /> remain in place, and only thc existing pavement is removed and replaced. Streets <br /> recommended f()r this type of improvement are shown as mill and overlay streets on the . <br /> attached map. <br />