pavement management - city of south burlington
TRANSCRIPT
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City of South Burlington Pavement Management
System
May 2011
Prepared by: Justin Rabidoux
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What is a Pavement Management System?
“An ongoing process of maintaining, upgrading, and operating your pavement
system cost effectively, based on a continuous physical inventory
and condition assessment”
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Pavement Management Is…
• …a management approach used by personnel to make cost-effective decisions about a road network.
AASHTO Pavement Management Guide (2001)
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A Pavement Management System Is…
• …a set of tools or methods that assist decision-makers in finding optimum strategies for providing, evaluating, and maintaining pavements in a serviceable condition over a period of time.
AASHTO Guide for Design of Pavement Structures (1993)
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Why Use a Pavement Management System?
Limited Taxpayer Money
Requires a Cost-Effective Method of Deciding How
to Invest Limited Resources
Reactive Maintenance:
•Rehabilitation
•Reconstruction
Proactive Maintenance:
•Preventative Maintenance
$$$$ $
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The Use of Pavement Management Tools
• Identify and prioritize maintenance and rehabilitation needs
• Evaluate the impact of various programs through a comparison of conditions, backlog, or another measure
• Establishing pavement condition targets• Setting budget needs
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Benefits of Pavement Management
• More efficient use of available resources• Ability to project future funding needs• More accurate and accessible information
on the pavement network• Ability to track pavement performance• Ability to show impacts on condition• Improved communication
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Why Use Micro PAVER Software?
• Developed by the Army Corps in the late 70’s• Recommended by APWA (American Public Works Association)• Optimizes funds allocated for Maintenance and Rehabilitation • Utilizes the Pavement Condition Index (PCI) methodology• PCI became an ASTM standard in 1999• Most widely used Pavement Management Software in the world
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What Does Micro PAVER Do?
• Inventory • Inspection (ASTM)• Reporting• Modeling• Condition Analysis• Project Planning
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Problem• Deteriorating Pavements
– More traffic, trucks, buses– Less funding available– Road materials are more costly
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Investment Value
Value at $5 per sf= $60 million
~81 miles of streets = 12 million square feet of pavement
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PCI Concept
PCI
Distress Severity
Distress Type
Distress Quantity
70 to 100 Very Good
55 to 70 Good
40 to 55 Fair
0 to 40 Poor
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PAVEMENT LIFE CYCLE
FAILED
EXCELLENT
GOOD
POOR
40% Drop in Quality 75% of Life
40% Drop in Quality
Small % of Life
AGE
FAIR
VERY GOOD
$1 Here
$3-$5 Here
PCI
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Managing Pavement Deterioration
PCI
AGE
Cost-effective time for minor rehabilitation
Costly treatments needed
Cost-effective time for preventive maintenance
Critical Condition
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Treatment Rules: Type, Timing, Cost
Routine Maintenance: Joint and crack sealing, surface seals, pothole filling
Excellent
FailedAge
Preventative Maintenance: Patching, thinner overlays
Reconstruction
Rehabilitation: Mill & fill overlays
PCI
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$1 Here >>>>>>>>>>>>>>>>>>>>>>
$3 To $5 Here >>>>>>>>>>>>>>>>
________________________________________________________AGE
Pavement Deterioration
PCI
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Index Rating
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Asphalt Distresses1 1 Alligator Cracking2 Bleeding2 Bleeding3 Block Cracking3 Block Cracking4 Bumps & Sags4 Bumps & Sags5 Corrugation5 Corrugation6 Depression7 Edge Cracking8 Joint Reflection9 Lane/Shoulder Dropoff
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Asphalt Distresses10 10 Longitudinal &
Transverse Cracking11 Patching11 Patching12 Polished Aggregate12 Polished Aggregate13 Potholes13 Potholes14 Railroad14 Railroad15 Rutting16 Shoving17 Slippage18 Swell19 Weathering