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CASE # / 1995 STREET MAINTENANCE PROGRAM By: Steven J. Jankowski, City Engineer Background: The purpose of tile annual street maintenance program is to address the routine maintenance needs of the City's pava~ments 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 to six years after construction and for subsequent sealcoatings at seven to eight year intervals. In reviewing the ~attached pavement history, it is apparent that more than one-third of the City's pavement was constructed in the five year interval between 1978 and 1982. Maintaining the desired maintenahce schedule would require significant variations in the size of the pro,am from year to year. Sin~e the City contributes 50 percent of the cost of the maintenance, these variations are undesirable from a budgetary standpoint. A secondary goal of this program is to attempt to work toward uniform annual program size, which not only helps from a budgeting standpoint, but allows a more consistent workload for the City public works forces which have had an increasing role in the preparatory work in recent years due to the aging of the pavements. In the past, the street maintenance program has been based solely on chronology. Over the summer, our intern Heidi Welsch rated the streets which fall within the 1995, 1996, or 1997 programs, and those backlogged from 1994 program. Based upon these pavement ratings, candidate projects have been identified for sealcoating or the more expensive overlay maintenance activity. In an att{rapt to balance the cost of the next three years programs, we have deviated from the strict chronological scheduling. Pavements which currently warrant overlays may be delayed a year or two, sinc~ it is felt that the delay will return streets to a like-new condition at the same expense. It is more effective to spend limited dollars on preventing sealcoatable streets from deteriorating to the point where the more expensive overlay becomes necessary. Attached is a tabld summarizing the 1995 and future years program. You will note from this table, the three year program balances the goals of utilizing a relatively steady City budget of under $100,000 annually, while addressing a budget of approximately 15 miles of roadway each year. The projected redpced funding level for 1997 will allow some contingency for pavements which may deteriorate from a sealable pavement to an overlay pavement. The reduced City share of the 1997 program may also allow the program to begin reducing the average maintenance cycle to the lower end of the range (i.e., sealcoats from eight to seven years). Maps illustrating the 1995, 1996, and 1997 proposed programs will be available for review at the meeting. Committee Act[on: Recommend to City Council that the City Engineer be directed to prepare a feasibility study for the 1995 Street Maintenance Program. Reviewed by: City Administrator City Engineer Finance Officer RB:12-13-94 /ccr