Agenda - Council - 02/09/2010 - Laserfiche WebLink

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CASE # REVIEW PROPOSED 2010 STREET MAINTENANCE PROGRAM By: Steven Jankowski, Assistant City Engineer Background: The Street Maintenance Program is an annual program which began in 1981 to address the preventative maintenance needs of the City's streets. An idealized maintenance schedule that the City has pursued is as follows: • Apply a first sealcoat 5 years following the construction of a bituminous pavement. Developer escrows are collected to cover this cost. • Apply a second seal coat in year 12 of the pavement. (seven years after the first seal coat). ~ Apply a one and one half inch bituminous overlay in year 19 (seven years following the second sealcoat). The pavement generally requires additional strength by this time and sealcoating is no longer effective in keeping water from penetrating the pavement due to extensive cracking. • Apply a seal onto the overlay in year 24. (five years following the bituminous overlay). Cracks will have reflected from the underlying pavement by this time and the seal will restore the imperviousness of the overlay in addition to improving the skid resistance of the pavement. Each year the street pavements are reviewed and rated on a scale from 1 to 10 using a rating system developed by the University of Wisconsin. The streets programmed for maintenance are selected based on a combination of the idealized schedule above and the rated conditions. It is also necessary to modify the program based upon the budget available. For these reasons the actual program will vary from the idealized schedule described above. The 2010 program consists of sealcoat projects on approximately 10.71 miles of City streets which are primarily located in the southern portion of the City. A breakdown of these seals is as follows: 1St seals 3.85 miles; MSA seals 0.68 miles; and seals on overlaid streets 6.18 miles. An exhibit illustrating the proposed program will be available at the meeting. The streets proposed for sealcoating will be preceded by having cracks wider than one-quarter inch sealed with an elastic sealing material. In addition, the Public Works department will repair any failed areas prior to work being performed by the contractor. The 2010 program consists of overlay projects on approximately 5.31 miles of City streets. Streets proposed for overlay will receive a one and one half inch layer of bituminous wear course. The Public Works department will repair failed areas prior to the overlay. Streets to be overlayed include; Rivers Bend subdivision, 2.02 miles; the southern portion of Brookview and White Pines Estates, 0.94 miles (located north of the Rum River Hills Golf Course); three short sections of roads totaling 0.52 mile which include Old County Road 5, Magnesium Street north of CR 116, and Dolomite Street between US 10 and Riverdale Drive and 1.82 miles of MSA