CITY OF SIGNAL HILL
STAFF REPORT
2175 Cherry Avenue • Signal
Hill, California 90755-3799
8/23/2022
AGENDA ITEM
TO:
HONORABLE MAYOR
AND MEMBERS OF THE CITY COUNCIL
FROM:
THOMAS BEKELE
PUBLIC WORKS DIRECTOR
SUBJECT:
2022 CITYWIDE PAVEMENT MANAGEMENT PROGRAM
Summary:
The Public Works Department has completed the 2022 Citywide Pavement Management Program (PMP) in accordance with California Streets and Highway Code, Section 2108.1. Agencies are required to prepare a PMP to qualify for state transportation improvement programs. Once certified by the City Engineer and approved by the City Council, the PMP is submitted to Los Angeles County Metropolitan Transportation Authority. The PMP guides and develops the most cost-effective treatment for the overall pavement system, primarily by giving priority to preventative maintenance.
Recommendations:
1. Receive and file the Final Report - Update of Pavement Management Program - dated February 18, 2022, prepared by Bucknam Infrastructure Group, Inc.
2. Direct staff to consider the recommendations from the Final Report within the upcoming capital improvement budgets as appropriate.
3. Direct staff to pursue grant funding opportunities, as they become available, to additionally fund pavement management improvements.
Fiscal Impact:
The Pavement Management Plan will guide the City’s future expenditures for street paving and repair using available transportation funds. Sufficient funds are available within the Capital Improvement Budget for upcoming projects that are listed in the PMP. The Council approved a budget of $1,230,056 for Fiscal Year (FY) 2022-23 and $1,000,000 for FY 2023-24. The funding allocation is comprised of (SB1) Road Maintenance and Rehabilitation Account (RMRA), and Metropolitan Transportation Authority (MTA) funds consisting of Measure R, Measure M, and Proposition C.
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Strategic Plan Objective:
Goal No. 4: Maintain and improve the public infrastructure.
Background:
The City of Signal Hill has the fiduciary and physical authority as well as the responsibility for upkeep of approximately 18.9 section miles of major arterial roadways and 17.4 miles of local City streets within its boundaries. This includes annual maintenance activities such as crack sealing, street patching, sweeping, slurry seal, as well as structural maintenance of the street system using overlay and reconstruction strategies. The City has made a commitment to its residents to provide a systematic program of street rehabilitation and repair in order to assure that the City’s streets are safe, functional, and provided at a reasonable cost to meet the needs of our residents and the traveling public. The City’s roadway network has an estimated value of over $76 million.
The City’s PMP strives to expend taxpayer funds in a cost-effective manner to ensure the most value for residents. In 2021, the City retained Bucknam Infrastructure Group, Inc. to update the City’s PMP which will provide recommended maintenance improvements and practices to guide the City’s street maintenance program.
Analysis:
The purpose of a PMP (Attachment A) is to provide planning and management tools that continually assess existing pavement conditions, predict future pavement conditions, and forecast pavement maintenance needs for budgeting capital improvement projects. The State and Los Angeles County MTA also require that local agencies have a value-based PMP system and regularly submit PMP reports in order to maintain eligibility for various State, Measure, and Proposition funding.
The City’s PMP update study was completed in February 2022 by Bucknam Infrastructure Group and has been recently reviewed by City staff. Pavement quantities, distress categories, and severity have been collected and input into the City's MicroPAVER database. MicroPAVER is a pavement management software used by the majority of local agencies in Southern California. Street pavement conditions are then computed and assigned a Pavement Condition Index (PCI). The PCI is a pavement condition rating that ranges from 0 to 100 with 100 being excellent. This new study analyzed all City streets and broke them down into two separate networks, namely the Arterials/Collector Network and the Local Network.
After collection of street data and input into the MicroPAVER program, the City’s weighted average PCI for the Arterial/Collector Network was 77.7 and the weighted average PCI for the Local Network was 68.8. The overall condition of the City’s pavement network is “Very Good” with a weighted average PCI of 73.7. For comparison, the overall current PCI for the City of Long Beach is 60.0, City of El Segundo is 64.5, and City of Compton is 58.1.
The report provides a listing of pertinent inventory and pavement condition data for each inventory unit within the City's pavement network. The PCI Report notes the names, limits, classification, dimension, surface type, and lane configuration of each inventory unit. Figure 1 below provides a CITY OF SIGNAL HILL Page 2 of 6 Printed on 8/18/2022
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dimension, surface type, and lane configuration of each inventory unit. Figure 1 below provides a visual depiction of pavement conditions.
Figure 1 - Signal Hill 2022 PCI Map
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The condition distribution for all streets is shown on Table 1 below:
Table 1- Condition Distribution by Mileage for All Streets There are several common pavement rehabilitation strategies:
· Pavement sections with a high PCI (75 to 95) are addressed with minimal preventative or stop gap measures such as filling cracks and potholes. Residential streets may benefit from the installation of High Density Mineral Bond (HDMB). HDMB is comprised of a mixture of fine aggregates and UV blocking polymers suspended in an asphaltic solution that is sprayed over the roadway surface (sometimes referred to as a fog seal or light slurry seal). · Residential asphalt concrete streets with a PCI ranging from 60 to 85 are typically slurry sealed to prolong the life of the pavement. Slurry seal is a mixture of fine to medium aggregate and asphalt emulsion that is designed to fill small cracks and prevent UV breakdown of the pavement. Slurry seal is not recommended on most arterials nor on pavements that receive moderate to heavy truck traffic.
· Asphalt concrete (AC) pavement sections with a PCI ranging from 20 to 60 usually require an AC overlay. AC overlays are generally 1 1/2” to 4” thick layer of rock aggregates and hot asphalt mixture.
· Pavement sections with a PCI below 20 are in poor to failing condition and will most likely require full depth removal and reconstruction including a new compacted aggregate sub-base and asphalt pavement layer.
PCIs are also used to forecast pavement rehabilitation capital improvement projects. Aside from the PCI, there are several other factors to consider such as funding availability and timing of other improvement projects (water, sewer, and utilities, etc.), which may significantly impact the pavement.
The cost to rehabilitate pavement ranges from approximately $0.60/square feet (SF) for slurry seal to over $10.00/SF for reconstruction. The project costs must also include the cost of ADA improvements as required by law. The cost of the ADA improvements can equal or exceed the cost to rehabilitate the pavement, if the street under consideration requires curb ramp upgrades, traffic signal modifications, driveway, and/or sidewalk replacements. For cost projection purposes, a maximum of 20% for ADA improvements and a 10% construction contingency is built into the program. Another component of this updated PMP is the projection of required funding needed to maintain or improve the City's pavement network and meet the City's PCI benchmark goals. To maintain a citywide average PCI of 73.7, an estimated minimum annual budget of approximately $700,000 per fiscal year CITY OF SIGNAL HILL Page 4 of 6 Printed on 8/18/2022
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will be needed for each of the next five fiscal years as outlined in Table 2 below.
Table 2 - Necessary Funding to Maintain Citywide PCI of 73.7 The PMP report also provides a funding scenario to increase the citywide average PCI to 80 to show the level of effort required to improve the PCI rating. However, the funding required to accomplish this increase averages $1.8 million per year for each of the next five fiscal years, which would require additional appropriation over the City’s current budget appropriations. Refer to Table 3 below.
Table 3 - Necessary Funding to Increase Citywide PCI to 80 Table 4 shows funds approved by the Council as part of the bi-annual FY 2022-23 and 2023-24 budget. The City has focused its efforts on improving city-wide pavement conditions by allocating funds for two years of the PMP and associated projects.
Table 4 - Biannual (2022-24) Budget Approved by the Council The 2022 PMP provides the Public Works Department with a road map on how to allocate its resources to address the community’s need for improved infrastructure. However, it should be noted that the proposed plan is a planning level document and may be subject to refinement to maximize cost-effectiveness based on several factors including utility conflicts, coordination with other capital improvement projects or private development projects, unplanned maintenance projects, potential rebidding of projects, and escalation in construction costs. As part of the annual Capital Improvement Project Budget presentation, staff will provide the Council with the updated list of streets on an ongoing basis as each year’s project scopes are better defined based on technical feasibility and CITY OF SIGNAL HILL Page 5 of 6 Printed on 8/18/2022
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ongoing basis as each year’s project scopes are better defined based on technical feasibility and funding availability.
It is recommended that the City incorporate PMP improvements into future capital improvement projects as identified by the PMP update with input by the City’s Public Works Engineering staff as outlined above. Additionally, it is recommended that the Council direct staff to pursue any available grant funding opportunities to ensure timely implementation of these recommended PMP improvements.
Reviewed:
_________________________
Sharon del Rosario
Approved:
_________________________
Joe Hoefgen
Attachment
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