Transportation leadership you can trust.

presented to the

AASHTO Performance Management Committee

presented by

Bill 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 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

00

5050

100100

150150

200200

250250

300300

350350

AADT (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)

5

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

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

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 OperationsOperationsCapacityCapacity

ExpansionExpansion

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)

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

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

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

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 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

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

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

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