Develop, fund, and implement a Citywide Repaving Plan designed to improve the quality of Port St. Lucie streets in a fiscally responsible manner with consideration for both short and long-term needs.
The repaving plan was developed using a need-based approach (“worst first”) while providing an equitable distribution of resources annually amongst the four (4) City Council Districts. The program focuses predominately on local streets, but will also occasionally encompass two-lane collector and arterial roadways. Roadways with more than two lanes will be prioritized and included in the capital improvement program (CIP) and are budgeted independently.
How the Plan Works
The City’s streets ideally would be repaved every 15-20 years, but this is not always possible due to budgetary constraints. So, the repaving program attempts to leverage all available funding to optimize the benefits to all City residents while providing equitable distribution amongst all Council Districts. Utilizing the roadway PCI ratings, local streets with lower PCI’s in each Council District are targeted for resurfacing first, assuming the base is still intact and does not exhibit failure. Should the base show signs of failure, the street will be identified for more extensive repairs and rehabilitation and will be considered for the Capital Improvement Program (CIP).
Current funding and estimated annual miles to be paved are shown in Table 1 below. The complete list of streets currently included in the 10-year is incorporated herein as a part of this document as Appendix “A”. The budget and thus annual miles paved is subject to change as additional funding sources are identified. As funding and conditions change, this plan will be reviewed and updated annually.
As pavement ages and base failures begin to occur, maintenance and rehabilitation become much costlier. The 'Pavement Condition Index' image below shows the typical deterioration curve for asphalt pavement as well as relative costs for “Preservation”, “Maintenance”, and “Rehabilitation”. Resurfacing roadways would fall into the “Reactive Maintenance” category and is a middle-cost range. To extend asphalt life and defer resurfacing costs, thus reducing lifetime asphalt maintenance costs, the repaving plan includes preservation techniques such as rejuvenation. “Pavement Preservation” (PP) can extend the useful life of asphalt pavement for a fraction of the cost of resurfacing if performed at the proper time. The 10-year paving plan currently allocates 10% of the annual budget to PP.
|Fiscal Year||Budget||Est. Miles Paved|
Pavement Condition Index
The Pavement Condition Index is a scale that is used to determine the condition of a paved road. A good PCI is between 60 and 70. The City of Port St. Lucie has an average of 65 PCI for all paved roads.
Conclusion (Revised 2018)
The Repaving Master Plan focusing primarily on the maintenance and upkeep of the City’s local
road¬ways, however for the purposes of this Master Plan recommendation all the City’s roadways (arterials, collectors, & local) are being considered. Utilizing a pavement management modeling software, all applicable treatment scenarios (e.g. rejuvenation, milling and repaving, crack seal then milling and repaving, full depth reclamation, full reconstruction) were evaluated to provide the most effective treatment strategy at the proper time in the pavement life cycle. Based upon the results of these models, maintaining the current citywide average PCI (65) would require approximately $6 Million per year. Approximately $4 Million would be allocated to the resurfacing of local streets and the remaining $2 Million would be allocated to the repair, resurfacing, and rehabilitation of the City’s arterial and collector roadways. Over the past year, the average PCI has fallen from a 65 to a 64. With the currently proposed repaving budget (as shown in Table 1), the Citywide average PCI will continue to fall from a 64 to a 60 within 5 years. That means that citywide, the street condition will fall from “good” to “fair”. After five (5) years, due to the proposed increase to $6 Million, the average PCI stabilizes near 60. After that point, to increase the average PCI above 60 will require more than $6 Million annually.
2018 Progress Update
In FY 17/18, 21.3 miles of a planned 21.5 miles were repaved. The goal of 21.5 miles was not achieved due to two (2) unforeseen circumstances. First, Dycus Avenue experienced a base failure and required an emergency full-depth base replacement. Second, improvements to the Mets Stadium are planned for late 2018, so the resurfacing of Peacock Boulevard was delayed one (1) FY to align with said improvements creating a “complete project” for residents. To compensate for Peacock, two (2) streets from FY 18/19 were advanced and repaved in FY 17/18 (Herder Road & Cree Road).
Knowing that the decrease in PCI is accelerating due to current funding levels, staff has proposed an increase in the resurfacing budget each FY in the proposed 10-year Capital Improvement Program (CIP). This will allow more roads to be repaved annually and will slow the decrease in average PCI. The new roadway list attached as Appendix “A” clearly shows the impact of the additional funds on the timetable for street resurfacing. In the proposed plan, 513.5 miles of city streets will be paved in the next ten (10) years. That’s an increase of approximately 191 miles over the repaving plan approved in 2017.