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 Presentation


  • Development of an Asset Management Framework for the Interstate Highway Systempresented to the AASHTO Performance Management Committee

    presented by Bill Robert Cambridge Systematics, Inc.

    February 2009

  • OutlineImportance of the IHSNCHRP Project 20-74Draft Interstate Asset Management FrameworkBasic asset management conceptsFocus areas for IHS asset managementInterstate Asset Management PlanNext Steps

  • Importance of the IHSPremier highway system in the U.S. 1% of the U.S. road network, but carries 20% of VMTBuilt to national standards, but cannot be managed with a one size fits all approachManaged by many agenciesGreat variation in physical conditions, traffic levels, etc...Every segment vital at some level (national, state, regional)A logical system on which to apply asset management principlesSelected other NHS segments may be of comparable importance

  • Importance of the IHS AADT and Pavement Condition Along an IHS Corridor

  • NCHRP Project 20-74ObjectiveDevelop a practical framework for applying asset management principles and practices to managing IHS investments

  • NCHRP Project 20-74Work StepsEvaluate available performance measures, data, risk assessment approaches and analytical toolsDevelop an Interstate Asset Management FrameworkPilot the frameworkPresent the draft framework in a workshopRevise the framework based on the workshopEvaluate benefits and barriers to implementation Finalize the framework

  • NCHRP Project 20-74Project TeamCambridge Systematics prime contractorApplied Research Associates data, risk assessmentParsons Brinckerhoff framework development, workshop, benefits, and barriersArora & Associates risk assessmentKLS Engineering performance measures

  • Interstate Asset Management FrameworkBasic Asset Management ProcessPolicy Goals and ObjectivesAnalysis of Options and TradeoffsResource Allocation DecisionsFinancialStaffEquipmentOtherProgram and Service DeliverySystem Condition and Service LevelsFunding LevelsCustomer Input

  • Interstate Asset Management Framework Focus Areas for IHS Asset ManagementDefining 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 bridgesRecommending a set of measures tailored for use in reporting and facilitating discussion of IHS performance

  • Risk Management Risk Taxonomy (adapted from NCHRP 20-59)

    Risk TypeExamplesUnintentional Hazard Oil spill Hazardous materials spill Vehicular crashesIntentional Threat Terrorist attack Crime War attackNatural Hazards Heavy rain Strong wind Heavy snow and ice Earthquake Hurricanes Flood Mud/landsidePerformance Substandard design Construction defects Materials defects Unexpected heavy traffic

  • Risk ManagementBasic ApproachIdentify critical infrastructure and risksDefine threat/hazard scenariosEstimate scenario impactsIdeally should base analysis on modeling of potential economic lossesThresholding approaches (high/medium/low risk) can be used as an alternativeIdentify and evaluate mitigation strategiesDevelop priorities for risk mitigation

  • IHS Asset Data and Tools Typical IHS Assets

    Asset CategoryAsset TypeRoads Pavement

    ShouldersStructures Bridges TunnelsCulverts/ drainage Noise barrier wallsRetaining wallsOverhead sign structuresHigh mast light polesSafety Features Pavement markings/ delineatorsLightingGuardrailsMedian barriersImpact attenuators SignsSurveillance/ monitor equip.Signal/control equipmentFacilities Rest areas Toll plazas Weigh stations Maintenance depots Pump housesCommunication facilities

  • IHS Asset Data and ToolsApproachReviewed available asset data and analytical tools for asset managementBuilt on work performed previously for NCHRP Project 20-57Recommended minimum data for IHS asset managementRecommended an approach to using readily available analytical tools to support asset management, e.g.Pavement/bridge management systemsFHWA analysis tools - HERS-ST, NBIASAssetManager NTPiloted the approach on 3 IHS corridors

  • IHS Performance MeasuresMotivationResource allocation should be guided by a set of policy objectives, performance measures and targets defined for each measureThe concepts of performance-based resource allocation are not unique to the IHSWhat is unique is the practical application of a performance-based approach to the IHSCriteria for selecting measuresCore versus comprehensive measuresRecommended set of performance measures for the IHS

  • IHS Performance MeasuresPerformance Measure Evaluation ApproachStep 1: Review Existing MeasuresStep 2: Assess NeedsStep 3: Define Selection CriteriaStep 4: Apply Selection CriteriaStep 5: Finalize Set of MeasuresPerform literature reviewInventory existing measuresCompile list of measures relevant for IHS Asset ManagementEvaluate needs for IHS performance measuresEstablish performance measure categoriesPerform gap assessmentSupplement set of existing measuresOrganize measures by categoryFeasibilityPolicy-sensitiveSupports long-term viewUseful for decision supportUseful across organization and beyondEvaluate each measureGroup measures by asset/objectiveCharacterize variations between like measuresDevelop initial setPeer reviewDevelop recommended setDistinguish between core and comprehensive

  • IHS Performance Measures Selecting Suitable Performance MeasuresFeasibility calculated from federally-reported data, or other data generally collected for IHSPolicy-sensitive directly related to an agencys stated policy objectivesLong-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 stakeholdersUseful for decision making keeping the set of measures as small as possible

  • IHS Performance MeasuresRecommended Core MeasuresPreservationPavementStructural adequacy (combination of riding, rutting, cracking and faulting)Ride quality (IRI)BridgePercent classified as structurally deficient (SD) weighted by areaSignsPercent functioning as intendedPavement markingsPercent functioning as intendedGuardrailPercent functioning as intended

  • IHS Performance MeasuresRecommended Core MeasuresMobility and accessibilityTravel time index ratio of actual travel time to ideal (unconstrained) timeDelay per vehicle (hours per vehicle)SafetyOverall crash rateFatal crash rateEnvironmentalRecommend a report card approach

  • IHS Performance MeasuresAdditional Comprehensive MeasuresIncludes other measures thatShould be collected and reported, but for which data are not consistently availableMay or may not be in an asset management programPreservationPercent functioning as intended for all remaining assetsMobilityWinter maintenance time to restore pavement surfaceDeliverySchedule adherence and cost control

  • Interstate Asset Management PlanWhy Have a Plan?Draws attention to importance of the IHS/Function Critical NetworkEstablishes set of performance measures for high-level reporting on interstate assetsRelates predicted performance of the IHS to available fundsPresents an approach to incorporating risk assessment in decision-makingImproves agency accountability

  • Interstate Asset Management PlanSample Table of ContentsSignificance of the Interstate Highway System Assets Included in the PlanMeasuring PerformancePast and Present FundingRisk AssessmentInterstate Investment StrategyUpdating the Plan

  • Next StepsHave completed the final reportNCHRP is now preparing the report for publicationWill be published as NCHRP Report 632: An Asset-Management Framework for the Interstate Highway SystemFor more information on NCHRP 20-74 contact:Bill RobertCambridge


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