Development of an Asset Management Framework for the Interstate Highway System

1. Development of an Asset Management Framework for the Interstate Highway System Transportation leadership you can trust. presented to theAASHTO Performance Management Committee presented byBill RobertCambridge Systematics, Inc. February 2009

2. Outline • Importance of the IHS • NCHRP Project 20-74 • Draft InterstateAsset Management Framework • Basic asset managementconcepts • Focus areas for IHS assetmanagement • 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

4. Importance of the IHS AADT and Pavement Condition Along an IHS Corridor AADT (vehicles per day in Thousands) 350 Very Good Good 300 Acceptable Not Acceptable 250 200 150 100 50 0 0 200 400 600 800 1,000 1,200 1,400 1,600 100 300 500 700 900 1,100 1,300 1,500 1,700 Distance Along Corridor (miles)

5. NCHRP Project 20-74Objective Develop a practical framework for applying asset management principles and practices to managing IHS investments

6. 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

7. 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

8. Interstate Asset Management FrameworkBasic Asset Management Process CapacityExpansion Preservation Operations Funding Levels Policy Goals and Objectives Customer Input Analysis of Options and Tradeoffs Resource Allocation Decisions Financial Staff Equipment Other Program and Service Delivery System Condition and Service Levels

9. 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

10. Risk Management Risk Taxonomy (adapted from NCHRP 20-59)

11. 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

12. IHS Asset Data and Tools Typical IHS Assets

13. 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

14. 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

15. IHS Performance MeasuresPerformance Measure Evaluation Approach Step 1: Review Existing Measures Step 4: Apply Selection Criteria • Perform literature review • Inventory existing measures • Compile list of measures relevant for IHS Asset Management • Evaluate each measure • Group measures by asset/objective • Characterize variations between like measures Step 2: Assess Needs • Evaluate needs for IHS performance measures • Establish performance measure categories • Perform gap assessment • Supplement set of existing measures • Organize measures by category Step 5: Finalize Set of Measures • Develop initial set • Peer review • Develop recommended set • Distinguish between core and comprehensive Step 3: Define Selection Criteria • Feasibility • Policy-sensitive • Supports long-term view • Useful for decision support • Useful across organization and beyond

16. 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

17. 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

18. 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

19. 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

20. 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

21. Interstate Asset Management PlanSample Table of Contents • Significance of the Interstate Highway System • Assets Included in the Plan • Measuring Performance • Past and Present Funding • Risk Assessment • Interstate Investment Strategy • Updating the Plan

22. 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 Robert Cambridge Systematics 617-354-0167 wrobert@camsys.com