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~CASE ~ ~[ 1998 STREET MAINTENANCE PROGRAM By: Steve Jankowski, City Engineer Background: The purpose of the annual street maintenance program is to address the routine maintenance needs of the City's pavements on a periodic basis so as to maximize the life of pavement. Attached to this case is a table which summarizes the history of the City's bituminous pavements. The frequency of maintenance on pavements has varied considerably, with some pavements receiving a sealcoating as little as two years and others as much as ten years after being constructed. In general, however, our current policy is to schedule sealcoating of new pavements the first time at five years after construction and to subsequently readdress maintenance needs at seven year intervals. Also attached to this case is a current summary of the City's last six street maintenance programs. Over the last three years, the annual expenditure has been in the range of $200,000 to $250,000. The proposed 1998 Street Maintenance Program will be substantially higher since it is proposed to overlay 5.5 miles of State aid street utilizing MSA funds. In the past, the programming for the street maintenance program has been based solely on the length of time since the pavement was last maintained. In 1996, with assistance from our interns, all pavements were rated on a relative basis. Each street segment in our inventory has been assigned a pavement rating from 1 to 10. Pavement ratings 8 through 10 require little or no maintenance. A pavement rating of 7 requires minor crack filling. Pavement ratings of 5 and 6 can benefit from sealcoating. Pavement ratings of 3 and 4 require bituminous overlay. Pavement ratings of 1 and 2 require reconstruction. Attached is a summary of the condition of the City's bituminous pavements. In making decisions on the scheduling of routine maintenance, pavement condition rating is used as an additional factor. In the past, the street maintenance programs have been financed by a combination of funding sources including special assessments, City funds contributed by a dedicated PIR fund, and developer escrows. Escrows are collected from new developments and are set aside to fund the first sealcoating of the streets. This is generally done after the pavement is five years old. The 1998 program proposes to utilize $95,660 in developer escrows to provide the first sealcoating for the streets contained in Project #98-01. This project includes 8.70 miles of pavement and is comprised of 28 individual subdivisions, all containing lots in the municipal sewer and water area. The pavements within these subdivisions were constructed between 1992 and 1995. This escrow is anticipated to cover most of the project cost, however, a small assessment in the range of $20 per unit on 770 benefited properties is anticipated to cover the total project costs in accordance with our current policy. The 1998 Street Maintenance Program proposes seven additional crack fill/sealcoat projects. #98-02 through #98-08, which will be organized by individual subdivision as has been the past practice. The total project costs for these projects will be divided equally between the City and