HomeMy WebLinkAboutItem Q PMP Council Presentation 6.27.16 v2Peter Bucknam, Project Manager
Bucknam Infrastructure Group, Inc.
City of Seal Beach, CA PAVEMENT MANAGEMENT PROGRAM 2016
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Background
Pavement Maintenance Inventory
Pavement studies performed in 2006, 2008, 2010, 2012, 2014 & 2016
9,392,213 SF of pavement throughout City
Citywide network – 41.5 section miles
The
pavement network is the City’s largest asset with an estimated replacement cost of $86.9 million
Source: www.en.Wikipedia.org
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Factors That Effect Pavement Life
Traffic volume and static / dynamic loads
Weather (rain, poor drainage, extreme heat, freezing)
Type of pavement
Age of pavement
Water runoff / pumping (high water)
Soil and base
material under pavement
Lack of preventative maintenance / rehab M&R efforts and available funding
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What is the size of the pavement network?
What condition is it in?
How fast is it deteriorating?
When do I need to perform repairs to maximize pavement life?
Where should we focus our
maintenance and CIP projects?
How much will it cost?
MicroPAVER
This software is heavily used throughout Southern California:
This includes over 200 cities within California; 30+ cities
in LA County and all 35 cities in Orange County
MicroPAVER allows for the collection of 20 Asphalt Concrete (AC) and 19 Portland Cement Concrete (PCC) distress types
Three levels
of severity can be collected for each distress type (Low, Medium, and High)
Need a Tool to Manage Pavement Information and Answer Questions:
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Pavement Management Program
Steps to Implementing a PMP:
Step 1: Assessment of Existing Pavement Network
Step 2: Update of Work Histories
Step 3: Pavement Condition Survey (Inspections)
Step
4: Develop Rehabilitation Strategies / Life-cycle Analysis
Step 5: Forecast Future Pavement Rehabilitation Projects and Costs
Step 6: Develop Plan based on available budget
and desired goals
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2015-16 Update of Seal Beach PMP
Over the past several months the City has been working with Bucknam Infrastructure Group to assess the previous PMP database, its pavement segmentation and to incorporate recent
pavement maintenance work histories
Completed a pavement condition survey on all streets to generate a Pavement Condition Index (PCI) for each pavement section – QC variances
to 2013-2014 study
Developed and ranked street conditions, maintenance recommendations, and cost estimates for all streets based on current conditions and maintenance practices
Developed a preventive maintenance and CIP rehab schedule to report on the overall weighted average PCI anticipated for the next 7 years based on projected needed/available funding
Prepared the citywide PMP report for OCTA compliance
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Pavement Condition Index (PCI)
The PCI is a condition rating that ranges from 0 to 100
Citywide Weighted Average PCI = Pavement section PCI multiplied by its area / by the total area of the network
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PCI = 86 to 100 (Very Good)
Action Preventative/Stop Gap
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PCI = 60 to 85 (Fair to Good)
Action Surface Treatment (Slurry Seal)
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PCI = 41 to 60 (Poor)
Action 1.5” – 3” Overlays
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PCI = 0 to 40 (Failed)
Action 4” to 6” Reconstruction
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Table 1- Condition Distribution by Section Mileage for All Streets
Bucknam Infrastructure Group, Inc.
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Pavement Condition Index (PCI) – All streets
Bucknam Infrastructure Group, Inc.
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Citywide Street Network PCI Map
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Next Steps (Identification of PMP Application & Funding Sources)
Forecast Pavement Rehabilitation Projects
How does our current PW M&R budget perform
What will our PCI be when applying Unconstrained, Maintain PCI, Existing and Do Nothing Budgets
Need to Consider:
Current Funding – Special Assessment alternatives / Grants
Long-term Goals – Proactive Arterial - Local planning
Alternative pavement applications
Achieve goal
of “preventative maintenance” condition
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Figure 2 – Sample Pavement Life Cycle
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Maintenance Methods
Crack Seal/Patching - General Repairs-Stop Gap (Localized Maintenance)
High Density Mineral Bond (HDMB) - (Global Maintenance); PCI range – 75 to 95
Slurry Seals (Global Maintenance);
PCI range -- 60 to 85
Cape Seals (Global Maintenance); PCI range – 40 to 60
Overlays (Major Maintenance); PCI range -- 20 to 60
AC Reconstruction (Major Maintenance); PCI range
– 0 to 20
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Scenario 1 – Projected Work Program for All Streets (Unconstrained Budget)
Bucknam Infrastructure Group, Inc.
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Scenario 2 – Maintain PCI at 84
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Scenario 3– Existing Funding
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Scenario 4 – Do Nothing Budget
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PCI Results based upon Budget Scenarios
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Findings and Recommendations
Network has weighted PCI of 84.4
24% of the Arterial network (approx. 3.1 miles) qualifies for overlay / rehabilitation
8% of the Local network (2.2 miles) qualifies for overlay / rehabilitation
At
a minimum, capital and maintenance projects should focus on maintaining the current weighted PCI of 84.4 over next five years
The City should re-evaluate PMP rehabilitation budget every
two years to improve/adjust Public Works CIP
The City should perform maintenance inspections every two years to build a solid planning model forecasts for 2016-17 and beyond to ensure
results
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Findings (Cont’d)
Budget shown in Table 4 (PMP report) is ample to maintain weighted PCI of 84.4 after five years, additionally, the citywide deferred backlog decreases from a level of $8,600,000 to $6,900,000
after five years
At the minimum, the City should budget pavement maintenance at levels shown in Table 4 to sustain the conditions found today as well as decrease deferred maintenance
The
City should continue to evaluate alternative pavement applications such as cape seal, high density mineral bond, and rubber overlay to stretch the City’s allocated funding and pavement
section life cycles
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Questions?
City of Seal Beach
Public Works Department
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