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Pavement Preservation: Integrating Pavement Preservation Practices and
Pavement Management
NHI Course 131104
National Highway Institute
Federal Highway Administration
NHI Course 131104: Pavement Preservation – 4 1-2
Related NHI Courses
131054: The Preventive Maintenance Concept131058: Selecting Pavements for Preventive Maintenance131103: Design and Construction of Quality Preventive Maintenance Treatments
NHI Course 131104: Pavement Preservation – 4 1-3
Importance of Integration
Each $1 in preventive maintenance saved $4 to $10 in the rehabilitation programSubstantial improvement in condition and ride quality realizedPavement management was crucial to the development of cost-effective preventive maintenance programs
NHI Course 131104: Pavement Preservation – 4 1-4
Course Guidelines
Participation is essentialSpeak loudly so all participants can hearOne person speaks at a timeReturn from breaks promptlyTurn cell phones and pagers to vibrate mode
NHI Course 131104: Pavement Preservation – 4 1-5
Course Materials
Participant’s WorkbookReference Manual
NHI Course 131104: Pavement Preservation – 4 1-6
Course Content
Executive SummaryModule 1: Course IntroductionModule 2: Importance of IntegrationModule 3: Project-Level Performance
IssuesModule 4: Network Modeling and
Analysis Tools
NHI Course 131104: Pavement Preservation – 4 1-7
Course Content (cont.)
Module 5: Incorporating Pavement Preservation into Strategic DecisionsModule 6: Implementation ConceptsModule 7: Summary and Wrap-UpWorkshops
NHI Course 131104: Pavement Preservation – 4 1-8
Before Getting Started…
Are there questions on logistics?Are there questions about the course materials?Are there other questions that need to be addressed before moving on to the technical material?
NHI Course 131104: Pavement Preservation - 4 2-2
Key Concepts
Pavement PreservationPreventive MaintenancePavement ManagementPavement Management SystemIntegration
NHI Course 131104: Pavement Preservation - 4 2-3
Importance of Preventive Maintenance
Without PM
With PM
Time
Condition
Window of Opportunity
NHI Course 131104: Pavement Preservation - 4 2-4
Cost-Effectiveness of Preventive Maintenance
With Preventive
Maintenance
Without Preventive Maintenance
Net Present Cost
NHI Course 131104: Pavement Preservation - 4 2-5
Pavement Management Components
Network Inventory Condition Assessment
Database
Treatment List and Treatment
Rules
Performance ModelsPrioritization/
Work Plan Development
Analysis Models
Feedback Loop
Constraints
Other Uses•GASB 34•Maintenance
NHI Course 131104: Pavement Preservation - 4 2-6
Decision Levels
Strategic Level
Network Level
Committed Projects
Inventory Work Plan Development
Decision Criteria
Preservation Strategyand Funding Level
Analysis
Legislature Upper Management
Pavement, Maintenance, and Bridge Engineers
NHI Course 131104: Pavement Preservation - 4 2-7
Decision Levels
Network Level
Project Level
InventoryPreliminary Work Plan
Development
InvestigationNegotiationFinal Project Selection
Feedback
Decision Criteria
Potential Project List
Analysis
NHI Course 131104: Pavement Preservation - 4 2-8
Decision Levels
At what level is network condition information collected?At what level are funding levels established?At what level are candidate projects established?At what level are projects designed?Which level typically uses the most detailed information?
NHI Course 131104: Pavement Preservation - 4 2-9
Use of Pavement Management to Support Preventive Maintenance
Demonstrate the benefits associated with preventive maintenanceEstimate funding needs to achieve specific targets or goalsAllocate available funding cost-effectivelyIdentify and prioritize treatment needs
NHI Course 131104: Pavement Preservation - 4 2-10
North Carolina Department of Transportation Simulation
1000-mile networkDistribution of network conditions based on actual conditionsEvaluated a “worst first” strategy
50 miles of roads in poor condition resurfacedEvaluated a “pavement preservation” strategy
100 miles of roads in fair condition addressed first before roads in poor condition
NHI Course 131104: Pavement Preservation - 4 2-11
Simulation Results
Average Pavement Condition over Time
707274767880828486
0 2 4 6 8 10 12 14 16
Year
Pave
men
t Con
ditio
n R
atin
g
Worst First Pavement Preservation
NHI Course 131104: Pavement Preservation - 4 2-12
New York State Department of Transportation Example
0
1020
30
40
5060
70
80
% Excellent % Good % Fair % Poor
1994 Base Condition
1999 Worst First
1999 Preventive Maintenance
NHI Course 131104: Pavement Preservation - 4 2-13
Impact of Pavement Preservation Program on Safety - NY
1.521.132000
2.072.071990
Fatality Rate Per 100 Million
VMTU.S. Average
Fatality Rate Per 100 Million
VMT New York
NHI Course 131104: Pavement Preservation - 4 2-14
91.1%
0.90%
1983 1990 1995 20010.00 %
20.00%
40.00 %
60.00 %
80.00%
100.00 %
% o
f Sys
tem
in L
evel
GoodDeteriorated
Kansas Department of Transportation
NHI Course 131104: Pavement Preservation - 4 2-15
Thurston County Appropriate Levels of Repair
.
Pavement Condition Rating (PCR)
10 15 20
0-40
40-50
50-60
60-100
Years (age)
Preventive Maintenance
Moderate Rehabilitation
Heavy Rehabilitation
Reconstruction
NHI Course 131104: Pavement Preservation - 4 2-16
Thurston County - Costs
10 15 20
0-40
40-50
50-60
60-100
Years (age)
Pavement Condition Rating (PCR)
Seals/Slurries (5-7 Years) $11,460
Thin Overlays (10-12 Years) $55,000
Recycle (15-20 Years) $234,110
(20-25 Years) Reconstruct $549,398
.
NHI Course 131104: Pavement Preservation - 4 2-17
Thurston County - Summary
10 15 20
0-40
40-50
50-60
60-100
Years (age)
Pavement Condition Rating (PCR)
Each $1.00 Spent at PCR 60-100
Costs $4.80 to $7.00 at PCR 50-60
Costs $20.00 at PCR 40-50
Costs $48.00 at PCR 0-40
.
NHI Course 131104: Pavement Preservation - 4 2-18
Integration Requirements
Method of identifying preventive maintenance needsModels that reflect future pavement performance with and without preventive maintenance treatmentsPrioritization process that considers preventive maintenanceAnalysis period long enough to display the impact of preventive maintenance
NHI Course 131104: Pavement Preservation - 4 2-19
Integration Gaps
Not tracking maintenance histories and performanceNot collecting data to support preventive maintenance treatment selection and timingMaintaining independent databasesOthers?
NHI Course 131104: Pavement Preservation - 4 2-20
Why Address Integration Issues?
Develop a more coordinated work plan to accomplish agency goalsBetter demonstrate the benefits in using preventive maintenance treatmentsKeep the decisions at the appropriate level within the agencyMake better informed decisions about treatment needs
NHI Course 131104: Pavement Preservation - 4 3-2
Level of Detail ComparisonsNetwork Diagnostic Surveys• High-speed road monitoring• Rutting, distress, roughness, skid, video record
Structural Evaluation• Deflection testing• Pavement thickness• Traffic projections
Project-Level Evaluation• Detailed visual inspection• Maintenance records• Traffic flow• Accident records
NHI Course 131104: Pavement Preservation - 4 3-3
Questions to be Addressed
Is it structurally adequate?Is it functionally adequate?Is the rate of deterioration normal?Are the materials durable?Is drainage adequate?Has previous maintenance been normal?What geometric factors are important?
NHI Course 131104: Pavement Preservation - 4 3-5
Impact on Cracking - Arizona
012345678
1985 1990 1995 2000
Year
Cra
ckin
g (%
)
NHI Course 131104: Pavement Preservation - 4 3-6
Impact on Roughness (Joints Repaired) - Pennsylvania
020406080
100120140
1992 1994 1996 1998 2000
Year
IRI
NHI Course 131104: Pavement Preservation - 4 3-7
Impact on Roughness (Joints Not Repaired) - Pennsylvania
020406080
100120140160
1992 1994 1996 1998 2000
Year
IRI
NHI Course 131104: Pavement Preservation - 4 3-8
Texas SPS-3 Test Sections
9391.1403/9710/90US5948M3
84.685.65307/959/90IH2048D3
Slurry Seal
Thin Overlay
KESAL per year
Date of Survey
Date ConstructedHighwayID
NHI Course 131104: Pavement Preservation - 4 3-9
Effect of Traffic – Texas
0
20
40
60
80
100
ThinOverlay
Slurry Seal CrackSeal
Control Chip Seal
Dis
tres
s Sc
ore
Low Traffic High Traffic
NHI Course 131104: Pavement Preservation - 4 3-10
Reductions in IRI Rate of Change Due to Maintenance Expenditures
0.07
0.10
0.12
0.17
0.29
North
Patching and Joint and Crack Sealing
0.04$250 to $300
0.05$200 to $250
0.06$150 to $200
0.11$100 to $150
0.19$50 to $100
South
Increase in Expenditure Level ($/lane mile/year)
NHI Course 131104: Pavement Preservation - 4 3-12
Effect of Timing on Performance
Age, years
Con
ditio
n In
dica
tor
Do-nothing curve Preventive treatment performance curve
Stop-gap treatment performance curve
NHI Course 131104: Pavement Preservation - 4 3-13
Suggested Optimal Timing
Fog seals, 1 to 3 yearsCrack seals, 2 to 4 yearsChip seals, 5 to 7 yearsSlurry seals, 5 to 7 yearsThin overlays, 5 to 10 years
NHI Course 131104: Pavement Preservation - 4 3-14
Effect of Proper Timing
Life Extension
Time
Distress Points
50
0
Treatment Applied
Do Nothing
Preventive Maintenance
NHI Course 131104: Pavement Preservation - 4 3-15
Effect of Improper Timing
Time
Distress Points
50
0
Do Nothing
Preventive Maintenance
Life Extension
Treatment Applied
NHI Course 131104: Pavement Preservation - 4 3-16
Average Equivalent Uniform Annual Cost (EUAC) Ratios for PCI Ranges
0
1
2
3
4
5
6
61-80 41-60 21-40 0-20
PCI Range
EUA
C R
atio
NHI Course 131104: Pavement Preservation - 4 3-17
Strategies to Assist With Timing
Earlier thresholdsQuick delivery contracts– Montana– Caltrans– Michigan– Georgia– New York
NHI Course 131104: Pavement Preservation - 4 3-18
Links to the Network-Level
Guidelines for using treatments– Preventive maintenance manual
Compatible data collection efforts– Frequency and timing of surveys– Availability of desired information– Accuracy of survey data
NHI Course 131104: Pavement Preservation - 4 4-2
Approaches to Integration –1Establish treatment rules for rehabilitation and reconstructionPavement sections that are NOT candidates for rehabilitation or reconstruction are candidates for maintenance
Rehabilitation and Reconstruction
OR Preventive Maintenance Candidate
NHI Course 131104: Pavement Preservation - 4 4-3
Approaches to Integration - 2Preventive maintenance treatments are considered collectively as a treatment and the specific treatment is not identified
Treatments ConsideredPreventive Maintenance
Thin OverlayMill and Fill
Structural OverlayReconstruction
NHI Course 131104: Pavement Preservation - 4 4-4
Example
70
50
25
100
PC
I
AGE
Preventive Maintenance
Light to Moderate Rehabilitation
Heavy Rehabilitation
Reconstruction
NHI Course 131104: Pavement Preservation - 4 4-5
Ohio Department of Transportation
Pavement Condition Ratings
Distress, Ride, Skid
Structural Deducts
Rate of Deterioration
Treatment Selection
Agency Guidelines
75< <85
NHI Course 131104: Pavement Preservation - 4 4-6
Treatment Rules Based on TimingRehabilitation and reconstruction activities are triggered based on condition informationPreventive maintenance treatments are triggered based on time since last activity
NHI Course 131104: Pavement Preservation - 4 4-7
Approaches to Integration – 3Specific preventive maintenance treatments are recommended based on information available in the pavement management system
NHI Course 131104: Pavement Preservation - 4 4-8
Improvements in ConditionAdd points
Change distress severityMedium and high severity cracks go to Low severity after crack sealingCorresponding changes to indexes are calculated and used to establish rules
NHI Course 131104: Pavement Preservation - 4 4-9
Change in Rate of Deterioration
Age, years
Con
ditio
n In
dica
tor
Do-nothing curve Same curve different point
Different curve
Reset curve
NHI Course 131104: Pavement Preservation - 4 4-10
Pros and Cons to Approach 3Allows an agency to incorporate treatment selection with project identificationModels can be more specific to the treatmentRequires more supporting information in the pavement management system
NHI Course 131104: Pavement Preservation - 4 4-11
Condition Surveys and Condition Index CalculationsTypes of distress surveyedUse of individual versus composite indicesFrequency of surveysOthers?
NHI Course 131104: Pavement Preservation - 4 4-12
Pavement Performance Models
Ability to develop distinct curves for each treatment and condition indexAvailability of necessary information in the database
NHI Course 131104: Pavement Preservation - 4 4-13
Family Modeling Approach
0
20
40
60
80
100
0 10 20 30 40 50
Age or Traffic Loads
Sample family: Original HMA Interstates (no overlays)
Condition
NHI Course 131104: Pavement Preservation - 4 4-14
Preventive Maintenance Treatment Performance
Age
Cond
ition
In
dex
A
Trigger
NHI Course 131104: Pavement Preservation - 4 4-15
Treatment RulesTreatment Feasibility Rules
Decision treesTreatment cycles
Treatment Reset RulesConstruction Cost Rules
NHI Course 131104: Pavement Preservation - 4 4-16
Minnesota Decision Tree – Part 1Too Much Load Related Distress?
Rutting > 10%
Yes Rehabilitation or Reconstruction Decision Trees
NoYes
Rut Fill
Last Rehab = OVL or Construction AND PSR > Trigger Yes
No
Too Many Cracks
Medium Mill and Overlay
Thin Mill and Overlay YesNo
Next SlideNo
NHI Course 131104: Pavement Preservation - 4 4-17
Minnesota Decision Tree – Part 2
Last Rehab = OVL or Construction
Good Crack Fill Candidate
Crack Fill
Good Crack Seal Candidate
Crack Seal
Surface Treatment Candidate
Yes Yes
NoYes
No
Last Rehab = Surface Treatment
No
Further branches consider curb thickness, traffic, and severity of transverse cracks
NHI Course 131104: Pavement Preservation - 4 4-18
What treatments are appropriate?
What other factors affect treatment selection?
When is preventive maintenance not appropriate?
Not appropriate
for preventive
maintenance
What types of cracking occur?
What causes the cracking?
Decision Tree for Cracking
Fatigue Longitudinal Transverse Shrinkage
Load Associated Non-Load Associated
Crack seal or thin HMA
overlay
Crack fill or chip
seal
Crack fill or chip
seal
Fog seal or chip seal or
thin HMA overlay
ADT
<1000 1000-5000
>5000
NHI Course 131104: Pavement Preservation - 4 4-19
Checking Treatment Triggers
Block Cracking
2.00
2.50
3.00
3.50
4.00
4.50
5.00
1 2 3 4 5 6 7 8
Age since 1st Chip Seal
Con
ditio
n
NHI Course 131104: Pavement Preservation - 4 4-20
Impact of Maintenance on IRI
-0.324-0.292Microsurfacing
-0.570-0.515Full depth patching
-0.340-0.225Joint and crack sealing
-0.432-0.294Joint and crack filling
Adjusted Mean Change in IRI
Mean Change in IRI
Activity
NHI Course 131104: Pavement Preservation - 4 4-21
Impact of Maintenance on a Condition Index
6.471.00Pavement fog seal4.762.10Microsurfacing
5.721.00ACC partial-depth patching
3.501.08Full-depth patching ACC/PCC
Mean Change in PCI After Correction
Mean Observed Change in PCIDescription
NHI Course 131104: Pavement Preservation - 4 4-22
Ogden City, Utah
21%15%
18%
33%
14%
4%
17%
25%
37%
18%
0%
10%
20%
30%
40%
0-3 4-6 7-9 10-14 15+
Remaining Service Life (Years)
Perc
ent o
f Net
wor
k Su
rfac
e A
rea
1996 2001
NHI Course 131104: Pavement Preservation - 4 4-23
Indiana Department of Transportation - Interstates
0
10
20
30
40
50
60
70
80
90
100
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
Year of analysis
Ave
rage
con
ditio
n
Rehabilitation/ Preventive Maintenance$100 million/ $15 million$125 million/ $12.5 million$125 million/ $25 million
NHI Course 131104: Pavement Preservation - 4 4-24
MDOT - Reconstruction Only
0%10%20%30%40%50%60%70%80%90%
100%
1997 2002 2007 2012 2017 2022 2027 2032 2037Year
Perc
ent o
f Lan
e M
iles
poor fair good
NHI Course 131104: Pavement Preservation - 4 4-25
MDOT - Reconstruction and Rehabilitation
0%10%20%30%40%50%60%70%80%90%
100%
1997 2002 2007 2012 2017 2022 2027 2032 2037Year
Perc
ent o
f Lan
e M
iles
poor fair good
NHI Course 131104: Pavement Preservation - 4 4-26
MDOT - With Preventive Maintenance
0%10%20%30%40%50%60%70%80%90%
100%
1997 2002 2007 2012 2017 2022 2027 2032 2037Year
Perc
ent o
f Lan
e M
iles poor fair good
NHI Course 131104: Pavement Preservation - 4 5-2
Strategic-Level Issues
The establishment of performance criteria for various road classificationsThe distribution of funding levels by district, including both targeted and actual funding levelsThe evaluation of trade-offs between the expansion of the network versus preservation of existing systems
NHI Course 131104: Pavement Preservation - 4 5-3
Strategic Management Framework
Technology
Goals, Policies, and Budgets
Technical InformationIntegration
NHI Course 131104: Pavement Preservation - 4 5-5
Remaining Service Life
8 years
Remaining Service Life
0 years
NHI Course 131104: Pavement Preservation - 4 5-6
Legislative Involvement
Pennsylvania DOT: “…Governor now has a maintenance-first philosophy, and he is putting his money where his mouth is”North Carolina DOT: Requires reporting of conditions and costsCalifornia DOT: Reduce backlog from 14,300 lane miles to 5,500 lane miles
NHI Course 131104: Pavement Preservation - 4 5-7
Establishing Goals and Budgets
Indicate the objective for the program in terms of what will be achieved and whenit will be accomplishedExample: Michigan set a 10-year goal for 95% of its expressways and 85% of its non-expressways to be in fair or good conditionMonitor the progress towards the goal
NHI Course 131104: Pavement Preservation - 4 5-9
ELEMENT 1 Service LevelRoadway Pavement A B C D F
Activities Condition IndicatorsPerformanceMeasures Threshold Threshold Threshold Threshold Threshold
AcceptableLevel of Service
Pavement Maintenance Pavement Condition Rating PCR 98 93 86 70 < 70 C
ELEMENT 2 Service LevelUnpaved Shoulders and Ditches A B C D F
Activities Condition IndicatorsPerformanceMeasures Threshold Threshold Threshold Threshold Threshold
AcceptableLevel of Service
Low Shoulder Low ≥ 2 inches FT 1% 5% 8% 11% > 11% CHigh Shoulder High ≥ 2 inch FT 1% 4% 6% 10% > 10% CLateral Ditches Blocked ≥ 50% & not funct. as designed FT 2% 6% 9% 12% > 12% CLateral Ditch Erosion Eroded ≥ 1 ft FT 1% 2% 3% 4% > 4% A
NCDOT Maintenance Performance Measures - Primary
NHI Course 131104: Pavement Preservation - 4 5-11
Minnesota DOT
Set a funding goal of $40 million based on information provided by the pavement management systemEstablished procedures for distributing money to the districts and assisting the districts with project and treatment selection
NHI Course 131104: Pavement Preservation - 4 5-12
Transportation Asset Management
Defined as a strategic approach to allocating resources for the preservation, operation, and management of our Nation’s transportation infrastructureFHWA emphasis on the use of asset management concepts for system preservation activities
NHI Course 131104: Pavement Preservation - 4 5-13
NY State Transportation Commissioner
“The citizens and taxpayers that use our transportation system expect excellence, integrity, reliability, and sustainability to be reflected in the decisions public officials implement on their behalf. …More use of technical tools to quantify the economic efficiency of proposed investment alternatives will help transportation executives meet these expectations.”
NHI Course 131104: Pavement Preservation - 4 5-14
Role of Management Systems in Supporting Asset Management Decisions
Policy Goals and Objectives
Integrated Analysis of Options and Tradeoffs
Resource Allocation Decisions, Investment Choices
Implementation – Program Delivery
System Monitoring and Performance Results
Quality Inform
ation
NHI Course 131104: Pavement Preservation - 4 5-15Location Referencing
Executive Information System FunctionsDATA BASE Traffic Census Data
Transportation Systems Assets
BMA
PMA
SMA
GIS
BMS Data
PMS Data
SMS Data
Treatment Selection Analysis for Maintenance Management
Programming & Planning Analysis for Bridges
Treatment Selection Analysis for Bridges
Condition Analysis for Bridges
Programming & Planning Analysis for Pavements
Treatment Selection Analysis for Pavements
Condition Analysis for Pavements
Programming & Planning Analysis for Safety
Treatment Selection Analysis for Safety
Condition Analysis for Safety
Programming and Planning Analysis for Maintenance Management
Condition Analysis for Maintenance Management MMS DataMMA
6-2NHI Course 131104 – Pavement Preservation 4
Implementation Issues
Technical issuesInstitutional issuesOrganizational issues
6-3NHI Course 131104 – Pavement Preservation 4
Inability to Track Maintenance
MP10
MP 25Code: 1200 Pothole Patching
Material Used:
Equipment Used:
Labor Hours:
6-5NHI Course 131104 – Pavement Preservation 4
Guidelines for Selecting a Common Reference System
Pick a system that is attribute and application neutralGet help and do it quicklyLeverage other efforts
6-6NHI Course 131104 – Pavement Preservation 4
Lack of Support for Early Intervention
Shorten the time between project identification and constructionPublic perception issues
6-9NHI Course 131104 – Pavement Preservation 4
PennDOT Press Release
“…we continuously strive to be as cost-effective as possible with every dollar we have available. … we will continue to explore new technologies that will help us do a better job for our customer. By preserving roads with the right type of treatment at the right time we can keep costs down and provide the biggest benefit possible to our customers.”
6-10NHI Course 131104 – Pavement Preservation 4
Lack of Performance Data
Treatment historiesTreatment objective
PreventiveStop-gap
Treatment costDo-nothing performance curves
6-11NHI Course 131104 – Pavement Preservation 4
Observations on Pavement Management Databases
A pavement management analysis limits the amount of data storedSubsurface pavement thickness and material information is often missingTraffic load data is missingOther useful information is missing
6-12NHI Course 131104 – Pavement Preservation 4
Lack of Integrated Databases
Multiple sources of data within an agencyData integration
Data warehousingLinking databases
6-13NHI Course 131104 – Pavement Preservation 4
Duplication of Effort
Improve efficiency and consistencyExample: Level of Service (LOS) and pavement condition surveys
6-14NHI Course 131104 – Pavement Preservation 4
Understanding the Pavement Management System
Understand the decision processUnderstand the impact maintenance activities have on treatment selectionBe sure decisions are being made at the appropriate level
6-15NHI Course 131104 – Pavement Preservation 4
Organizational Structure Issues
Decentralized Centralized
Higher
Lower
Level of Coordination Required for
Decisions
6-16NHI Course 131104 – Pavement Preservation 4
Developing an Action Plan
Benchmark existing practicesIdentify steps needed to be takenPrioritize the stepsPrepare the action plan
6-17NHI Course 131104 – Pavement Preservation 4
Benchmarking Practices
4321A2: The agency’s capital maintenance funding allocations for roads are based on an assessment of pavement needs
4321A1: Agency pavement preservation policies are supported through the use of pavement management activities
Strongly Agree
Strongly Disagree
6-18NHI Course 131104 – Pavement Preservation 4
Identify and Prioritize Actions
Where do gaps exist between good practice and agency practice?What steps can the agency take to reduce the gaps?Which issues are organizational issues and which are local issues?Which actions will have the greatest immediate benefit to the agency?
6-19NHI Course 131104 – Pavement Preservation 4
Guidelines
Start small and build graduallyInvolve as many stakeholders as possibleRecognize change doesn’t happen immediatelyPromote the plan and build acceptanceDocument and promote progress
6-20NHI Course 131104 – Pavement Preservation 4
Success Stories: Organizational Structure
NCDOT: Pavement Preservation EngineerPavement Management Engineers in districts (Utah, Virginia)
6-21NHI Course 131104 – Pavement Preservation 4
Success Stories: Contracting Issues
SDDOT: First chip applicationMDOT: Reduced design and developed warranties
6-22NHI Course 131104 – Pavement Preservation 4
Success Stories: Technical Issues
Iowa DOT: Effects of preventive maintenanceMnDOT: Network-level decision trees and review of preventive treatment selectionMDOT: Single referencing systemIntegrating maintenance management and pavement management systemsData warehousingManuals of Practice
6-23NHI Course 131104 – Pavement Preservation 4
Long-Term Research
Performance studiesTechnology transfer/sharing resultsData integration issues
6-24NHI Course 131104 – Pavement Preservation 4
Maintaining an Integrated Approach
Develop a feedback loopLink Manuals of Practice to pavement management treatment selectionDevelop a steering committeeDiagram relationships between sources of data and usersOther ideas?
NHI Course 131104: Pavement Preservation 4 7-2
Future Efforts
FHWA’s Expert Task Group (ETG)National Center for Pavement PreservationRegional/State Preservation GroupsAASHTO Subcommittee on Maintenance –Pavement Task ForceOutreach EffortsFoundation for Pavement Preservation (FP2)Others
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