development of an asset management framework for the interstate highway system
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Development of an Asset Management Framework for the Interstate Highway System. Transportation leadership you can trust. presented to the AASHTO Performance Management Committee presented by Bill Robert Cambridge Systematics, Inc. February 2009. Outline. Importance of the IHS - PowerPoint PPT PresentationTRANSCRIPT
Transportation leadership you can trust.
presented to the
AASHTO Performance Management Committee
presented byBill RobertCambridge Systematics, Inc.
February 2009
Development of an Asset Management Framework for the Interstate Highway System
2
Outline
Importance of the IHS
NCHRP Project 20-74
Draft InterstateAsset Management Framework• Basic asset management
concepts• Focus areas for IHS asset
management• Interstate Asset Management Plan
Next Steps
3
Importance of the IHS
Premier highway system in the U.S. – 1% of the U.S. road network, but carries 20% of VMT
Built to national standards, but cannot be managed with a “one size fits all” approach• Managed by many agencies• Great variation in physical conditions, traffic levels, etc...
Every segment vital at some level (national, state, regional)
A logical system on which to apply assetmanagement principles
Selected other NHS segments may be ofcomparable importance
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Importance of the IHS AADT and Pavement Condition Along an IHS Corridor
00
5050
100100
150150
200200
250250
300300
350350AADT (vehicles per day in Thousands)AADT (vehicles per day in Thousands)
Very GoodVery Good
GoodGood
AcceptableAcceptable
Not AcceptableNot Acceptable
00100100
200200300300
400400500500
600600700700
800800900900
1,0001,0001,1001,100
1,2001,2001,3001,300
1,4001,4001,5001,500
1,6001,6001,7001,700
Distance Along Corridor (miles)Distance Along Corridor (miles)
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NCHRP Project 20-74Objective
Develop a practical framework for Develop a practical framework for applying asset management principles and applying asset management principles and
practices to managing IHS investmentspractices to managing IHS investments
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NCHRP Project 20-74Work Steps
Evaluate available performance measures, data, risk assessment approaches and analytical tools
Develop an Interstate Asset Management Framework
Pilot the framework
Present the draft framework in a workshop
Revise the framework based on the workshop
Evaluate benefits and barriers to implementation
Finalize the framework
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NCHRP Project 20-74Project Team
Cambridge Systematics – prime contractor
Applied Research Associates – data, risk assessment
Parsons Brinckerhoff – framework development, workshop, benefits, and barriers
Arora & Associates – risk assessment
KLS Engineering – performance measures
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Interstate Asset Management FrameworkBasic Asset Management Process
Policy Goals and ObjectivesPolicy Goals and Objectives
Analysis of Options and TradeoffsAnalysis of Options and Tradeoffs
Resource Allocation DecisionsResource Allocation Decisions
FinancialFinancial StaffStaff EquipmentEquipment OtherOther
Program and Service DeliveryProgram and Service Delivery
System Condition and Service LevelsSystem Condition and Service Levels
Funding LevelsFunding Levels
Customer InputCustomer Input
PreservationPreservation OperationsOperations CapacityCapacityExpansionExpansion
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Interstate Asset Management Framework Focus Areas for IHS Asset Management
Defining how to better incorporate assessment of the risks of system failure into an asset management framework
Providing guidance for handling all IHS assets, particularly assets besides pavements and bridges
Recommending a set of measures tailored for use in reporting and facilitating discussion of IHS performance
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Risk Management Risk Taxonomy (adapted from NCHRP 20-59)
Risk Type Examples
Unintentional Hazard Oil spill Hazardous materials spill Vehicular crashes
Intentional Threat Terrorist attack Crime War attack
Natural Hazards Heavy rain Strong wind Heavy snow and ice Earthquake Hurricanes Flood Mud/landside
Performance Substandard design Construction defects Materials defects Unexpected heavy traffic
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Risk ManagementBasic Approach
Identify critical infrastructure and risks
Define threat/hazard scenarios
Estimate scenario impacts
• Ideally should base analysis on modelingof potential economic losses
• Thresholding approaches (high/medium/low risk) can be used as an alternative
Identify and evaluate mitigation strategies
Develop priorities for risk mitigation
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IHS Asset Data and Tools Typical IHS Assets
Asset Category Asset Type
Roads Pavement Shoulders
Structures Bridges Tunnels Culverts/ drainage Noise barrier walls
Retaining walls Overhead sign structures High mast light poles
Safety Features Pavement markings/ delineators Lighting Guardrails Median barriers
Impact attenuators Signs Surveillance/ monitor equip. Signal/control equipment
Facilities Rest areas Toll plazas Weigh stations
Maintenance depots Pump houses Communication facilities
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IHS Asset Data and ToolsApproach
Reviewed available asset data and analytical tools for asset management• Built on work performed previously for NCHRP Project 20-57
Recommended minimum data for IHS asset management
Recommended an approach to using readily available analytical tools to support asset management, e.g.• Pavement/bridge management systems• FHWA analysis tools - HERS-ST, NBIAS• AssetManager NT
Piloted the approach on 3 IHS corridors
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IHS Performance MeasuresMotivation
Resource allocation should be guided by a set of policy objectives, performance measures and targets defined for each measure
The concepts of performance-based resource allocation are not unique to the IHS
What is unique is the practical application of a performance-based approach to the IHS• Criteria for selecting measures• Core versus comprehensive measures• Recommended set of performance measures for the IHS
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IHS Performance MeasuresPerformance Measure Evaluation Approach
Step 1: Review Existing MeasuresStep 1: Review Existing Measures
Step 2: Assess NeedsStep 2: Assess Needs
Step 3: Define Selection CriteriaStep 3: Define Selection Criteria
Step 4: Apply Selection CriteriaStep 4: Apply Selection Criteria
Step 5: Finalize Set of MeasuresStep 5: Finalize Set of Measures
• Perform literature reviewPerform literature review• Inventory existing measuresInventory existing measures• Compile list of measures Compile list of measures
relevant for IHS Asset Managementrelevant for IHS Asset Management
• Evaluate needs for IHS performance measuresEvaluate needs for IHS performance measures• Establish performance measure categoriesEstablish performance measure categories• Perform gap assessmentPerform gap assessment• Supplement set of existing measuresSupplement set of existing measures• Organize measures by categoryOrganize measures by category
• FeasibilityFeasibility• Policy-sensitivePolicy-sensitive• Supports long-term viewSupports long-term view• Useful for decision supportUseful for decision support• Useful across organization and beyondUseful across organization and beyond
• Evaluate each measureEvaluate each measure• Group measures by asset/objectiveGroup measures by asset/objective• Characterize variations between Characterize variations between
like measureslike measures
• Develop initial setDevelop initial set• Peer reviewPeer review• Develop recommended setDevelop recommended set• Distinguish between core Distinguish between core
and comprehensiveand comprehensive
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IHS Performance Measures Selecting Suitable Performance Measures
Feasibility –calculated from federally-reported data, or other data generally collected for IHS
Policy-sensitive – directly related to an agency’s stated policy objectives
Long-term and strategic – able to forecast the measure over time and support long-term tracking
Understandable – easily understood and communicated within an organization and to external stakeholders
Useful for decision making – keeping the set of measures as small as possible
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IHS Performance MeasuresRecommended Core Measures
Preservation• Pavement
− Structural adequacy (combination of riding, rutting,cracking and faulting)
− Ride quality (IRI)
• Bridge− Percent classified as structurally deficient (SD) – weighted by area
• Signs− Percent functioning as intended
• Pavement markings− Percent functioning as intended
• Guardrail− Percent functioning as intended
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IHS Performance MeasuresRecommended Core Measures
Mobility and accessibility• Travel time index – ratio of actual travel time to ideal
(unconstrained) time• Delay per vehicle (hours per vehicle)
Safety• Overall crash rate• Fatal crash rate
Environmental• Recommend a report card approach
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IHS Performance MeasuresAdditional Comprehensive Measures
Includes other measures that• Should be collected and reported, but for which data are not
consistently available• May or may not be in an asset management program
Preservation• Percent functioning as intended for all remaining assets
Mobility• Winter maintenance – time to restore pavement surface
Delivery• Schedule adherence and cost control
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Interstate Asset Management PlanWhy Have a Plan?
Draws attention to importance of the IHS/FunctionCritical Network
Establishes set of performance measures for high-level reporting on interstate assets
Relates predicted performance of the IHS to available funds
Presents an approach to incorporating risk assessment in decision-making
Improves agency accountability
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Interstate Asset Management PlanSample Table of Contents
I. Significance of the Interstate Highway System
II. Assets Included in the Plan
III. Measuring Performance
IV. Past and Present Funding
V. Risk Assessment
VI. Interstate Investment Strategy
VII. Updating the Plan
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Next Steps
Have completed the final report
NCHRP is now preparing the report for publication• Will be published as NCHRP Report 632: An Asset-
Management Framework for the Interstate Highway System
For more information on NCHRP 20-74 contact:Bill RobertCambridge [email protected]