City Council Agenda and Packet 2023 02 28 SP

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• Pavement Type — Depending on costs, design life, and the City's goals, a weighting factor can be applied based on the materials used to construct the pavement • Functional Class — Generally higher volume streets are given the greatest priority within a program since they serve the most vehicles • Area —Project selection can consider the size of a project when determining rehabilitation priority. The City can decide to select large groups of streets over small ones if that approach suits the goals set forth at the beginning of the project. For the City, weighting factors for these categories were set to maximize the savings from the concept of cost of deferral and address lower PCI 'Weak' streets in order to minimize backlog growth. Rehabilitation Strategies and Unit Rates The rehabilitation strategies and unit rates used in the budget analysis are the driving factors in determining funding requirements for the City. A detailed listing of how each rehabilitation activity is applied and its associated cost can be found in Table 4. Some important parameters include: • Pavement Type — The City of Louisville has a majority asphalt network with a small fraction of concrete. The lists of appropriate rehabilitation activities for these two pavement types are unique and vary in cost. • Rehab Activity —The assigned identifier and name to each rehabilitation strategy. Various degrees of slurry sealing are outlined to highlight the increasing cost associated with additional patching requirements for lower PCI streets. • Min, Max, and Critical PCI — These values compose the PCI range for which a particular rehabilitation activity can be applied where the Min and Max values define the upper and lower limit, and the Critical PCI is the point at which the rehabilitation becomes a higher priority to take advantage of the cost of deferral factor. Overlap in the PCI range allows for additional rehabilitation differentiation based on pavement strength. • Unit Rates —The rehab costs are presented on a per square yard basis for each pavement type, functional class, and rehabilitation activity combination. A base unit rate is established for the lowest assumed cost for a work type and adjusted for each functional class depending on the additional work that may be required for traffic control, intersection improvements, landscaping, utility adjustments, and right-of-way (ROW) infrastructure. IMS worked closely with the City to determine rates that accurately represent the cost of work. IMS Pavement Management Report Louisville, CO 2022 Page 1 28