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1997 STREET MAINTENANCE PROGRAM By: Steven J. 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 ttie first time at five years after construction and to subsequently readdress maintenance needs at seven year intervals. Attached to this case is a current summary of the pavement history in the City and a summary of the City's last five street maintenance programs. The annual expenditure on street maintenance has significantly increased over these past five years, with current annual expenditures of nearly one-quarter million dollars to maintain the City's nearly 130 miles of bituminous pavement. 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. This summer, 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 one to ten. Pavement ratings eight through ten require little or no maintenance. A pavement rating of seven requires minor crack filling. Pavement ratings of five and six can benefit from sealcoating. Pavement ratings of three and four require bituminous overlays. Pavement ratings of one or two 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 will be used as a secondary factor in scheduling pavement maintenance. The 1997 program has a budget of $293,700, which is distributed among three major components; the City's share at $135,000, which can be matched with an equal amount of special assessment, and developer's escrows of $23,500 to cover first sealcoats on newer roads. The proposed 1997 program will include 14.3 miles of sealcoating and crack filling at an estimated cost of $140,000 and 3.55 miles of overlays at a cost of $151,950. This represents a total program of 17.8 miles at a cost of $292,390. A map showing the proposed 1997 program will be available at the meeting. We will also be prepared to identify the backlogged projects which have decreased significantly in size since the 1996 program. Committee Action: Direct the City Engineer to prepare a feasibility study for the 1997 Street Maintenance Program. Reviewed by: City Administrator City Engineer Finance Officer Public Works Supervisor RB:01/14/97 /ccr