pavement management systems tool for keeping … management systems tool for keeping pavement...
TRANSCRIPT
Pavement Management Systems
Tool for Keeping Pavement Networks in a
State of Good Repair
Dr. Nick Vitillo
In a country, where the majority of the traveling public and companies use local, county, state and Interstate roads for their daily commute and goods movement, preserving and maintaining these networks in a State of Good Repair is critical to providing efficient, reliable, and safe service and economic prosperity.
STATE OF GOOD REPAIR
State of Good Repair is a dynamic target based on the Level Of Service (LOS) that the user expects or demands and is willing to pay for in the form of taxes or tolls. The LOS may be based on the condition (ride quality and distresses) of the pavement, reliability of the travel time, safety, and cost.
STATE OF GOOD REPAIR
STATE OF GOOD REPAIR needs to be defined by the agencies. The level that defines “GOOD” can incorporate condition, safety, reliability, and cost.
Based on this definition, the agency can estimate
• Where they are now • Set the timeframe for achieving the desired SGR level • Determine the funds necessary to achieving the desired level in the given timeframe
Improvements in materials, technology, and knowledge can accelerate the rate at which we reach the STATE OF GOOD REPAIR . Example: Materials – Improvements in mix design and additives have provided longer lasting pavements Design – New design procedures have optimized pavement structures Technology - (Computer advancements and reduction in costs) improve design, construction, data collection, testing, and analysis of Preservation/Rehabilitation/Reconstruction treatments.
STATE OF GOOD REPAIR
Pavement Materials Classification, quality assurance testing (specifications), material design
Pavement Design Design of Structural layers for New Pavements and Pavement Rehabilitation Assess in-situ pavement material properties and layer thickness
Pavement Construction
Construction practices of New Pavements and Pavement Rehabilitation including specification development and quality assurance
Pavement Management
Monitoring Post-construction condition, timing preventive preservation and rehabilitation treatments, and economic analysis of alternatives
Pavement Research Research to improve all of the above
A Pavement Management System (PMS) is designed to provide objective information and useful data for analysis so that road managers can make more consistent, cost-effective, and defensible decisions related to the preservation of a pavement network. While a PMS cannot make final decisions, it can provide the basis for an informed understanding of the possible consequences of alternative decisions. A PMS does NOT make decisions, Managers DO!
PAVEMENT MANAGEMENT SYSTEM Overview
Pavements deteriorate over time due to traffic/use, environment, and aging Poor road conditions increase vehicle owner costs $325–$700 annually (vehicle damage, tire wear, etc.)
National average is $333 per motorist totaling $67 billion per year
Poor road conditions are a contributing factor in many roadway accidents
According to some studies as much as 30% of crashes each year)
Good roads cost less… if maintained at a reasonable level of service if they receive proper pavement preservation
Importance of Pavement Management
Preserving roads in good condition is key to maintaining the health of the State’s Pavement Networks.
Rutgers University - CAIT
Sophistication
$
Data Collection
Analyses
Equipment
Maintenance
PAVEMENT MANAGEMENT
SYSTEMS
PMS SUBSYSTEMS -PMS DATA
Inventory Condition - Pavement Evaluation History – Initial, Pavement Preservation, Routine Maintenance, Rehabilitation, and Reconstruction Traffic Treatment Costs
-MODELING - ANALYSIS
Serviceability Rating Performance Predictions Economic Analyses-Budgeting / Programming
-DATA MANAGEMENT Relational Databases Report Generation
PMS Subsystems
PAVEMENT CONDITION EVALUATION
PAVEMENT RIDE QUALITY SURFACE DISTRESS RUTTING SKID RESISTANCE
PMS Data Collection
Ride Quality, Surface Distress, Rutting, Skid Resistance
Evaluate current condition of pavementnetwork
Determine portion of the Network that requires Preservation, Rehabilitation, and Reconstruction
Estimate the rate of deterioration Project future conditions to determine future
maintenance & rehabilitation needs Determine future cost of repairs
Need for Annual Condition Surveys
Rutgers University - CAIT
Pavement Condition Survey Equipment
Profiler roughness, distress,
rutting
FWD
Skid Trailer Pavement
friction
Structural Capacity
GPR
Safety Condition
Visual Windshield
DATA COLLECTION
CONTINUOUS - WINDSHIELD SURVEY/RATER KEYBOARD, 3D IMAGING AND AUTOMATED CRACK DETECTION
Pavement Condition Evaluation
NJDOT Version
Distress Identification Manual for the Long-Term Pavement Performance Program
Standardization
SURFACE DISTRESS BITUMINOUS/COMPOSITE PAVEMENTS
* * * * *
*
* Alligator Cracking
Longitudinal Cracking
Transverse Cracking
Rutting
Patch Condition
Pothole
Pavement Condition Evaluations
ROAD QUALITY - USER PERCEPTION OF SMOOTHNESS
Pavement Condition Evaluations
SAFETY - SKID RESISTANCE, RUTTING, GEOMETRY, SIGHT DISTANCE
Pavement Performance Models TO PREDICT FUTURE CONDITON BASED ON PAST PERFORMANCE
0
20
40
60
80
100
2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020
Dis
tres
s Ind
ex
Years
Prediction Model
Default Distress Model
Triggers
Current TimeDo Nothing
Pavement Preservation
Rehabilitaton
Reconstruction
Time
Cond
ition
Pavement Rehabilitation
Pavement Preservation
Pavement Reconstruction
Do Nothing
Deterioration over time and cost to repair
Effect of Treatment Timing on Costs
$20.00/sq yd
< $2.00/sq yd
$80.00/sq yd
New
Good
Fair
Poor
V. Poor
Rutgers University - CAIT
Multi-Year Prioritization
Treatment
Reset
Age or Traffic Loads
Pave
men
t C
ondi
tion
Inde
x Performance Prediction Model
Benefit or Effectiveness
(Area under the curve)
Predicted Performance
Trigger Limit
Condition
Increase
Life
Extension
0 10 20 30 40 50 60 70 80 90
100
0 1 2 3 4 5 6 7 8 9 10
Con
ditio
n
Age
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Policy Decisions can be based on the average projected condition at given budget levels for a single asset or for the entire network Network Performance Budget Scenarios
Do nothing Spend $100 million Spend $300 million
Example Network Performance Scenario
Good
Poor
Current Condition
When
How Much
SGR Level
ECONOMIC ANALYSES
$0.00
$50,000,000.00
$100,000,000.00
$150,000,000.00
$200,000,000.00
$250,000,000.00
$300,000,000.00
$350,000,000.00
2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023
Preservation
Rehabilitation
Tables
REPORTING TOOLS
Annual Construction Program
Overall Network Condition
Section Year Cost
32 2013 $100,000
47 2015 $237,999
GIS Maps
Graphs
0102030405060708090
1st Qtr 2nd Qtr 3rd Qtr 4th Qtr