Evaluation of Highway Performance Measures for a Multi-State Corridor - A Pilot Study
Table of Contents
![Pilot Study cover: Evaluation of Highway Performance Measures for a Multi-State Corridor - A Pilot Study.](images/fhwa_hghwyprfmncemsrs_cover.jpg)
- Foreword
- Executive Summary
- 1. Introduction
- 2.0 Data Acquisition and Analysis Plan
- 3. Data Collection and Integration
- 4. Analysis and Evaluation of Alternative Condition Indicators
- 5. Design Report: Condition Indicator Display Capability in ICAT
- List of Figures
- Figure 4.1 Bridge Probability Distributions - All States
- Figure 4.2 Bridge Cumulative Distributions - All States
- Figure 4.3 Weighted Bridge Distributions - All States
- Figure 4.4 Delaware Pavement Distress Conversation Tables
- Figure 4.5 Pavement Distributions - Delaware
- Figure 4.6 Pavement Distributions - Maryland
- Figure 4.7 Pavement Distributions - Virginia
- Figure 4.8 Weighted Pavement Distributions - Delaware
- Figure 4.9 Pavement Distributions - All States
- Figure 4.10 OPC versus CCI in Virginia
- Figure 5.1 WebCAT User Interface
- List of Tables
- Table 2.1 Available Data from States
- Table 2.2 Sources for Pavement and Bridge Data
- Table 4.1 Basic Bridge Statistics - Not Weighted
- Table 4.2 Basic Bridge Statistics - Weighted
- Table 4.3 Bridge Correlation Coefficients
- Table 4.4 Basic Pavement Statistics Part 1 - Not Weighted
- Table 4.5 Basic Pavement Statistics Part 2 - Not Weighted
- Table 4.6 Basic Pavement Statistics - Weighted
- Table 4.7 Pavement Correlation Coefficients - Delaware
- Table 4.8 Pavement Correlation Coefficients - Maryland
- Table 4.9 Pavement Correlation Coefficients - Virginia
- Table 4.10 Delaware Pavement Distress Definitions for Severity
- Table 4.11 Delaware Pavement Distress Definitions for Extent
- Table 4.12 Maryland Pavement Distress Condition Indexes and Descriptions
- Table 4.13 Virginia Pavement Crack Severity Definitions
- Table 4.14 Virginia CCI and IRI Condition Categories
- Table 5.1 Bridge Database Structure
- Table 5.2 Pavement Database Structure
Presented by
FHWA-HIF-10-015
Foreword
Notice
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Quality Assurance Statement
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Technical Report Documentation Page
1. Report No. FHWA-HIF-10-015 |
2. Government Accession No. | 3. Recipient's Catalog No. | ||||
4. Title and Subtitle Evaluation of Highway Performance Measures for a Multi-State Corridor - A Pilot Study |
5. Report Date March 2010 |
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6. Performing Organization Code | ||||||
7. Author(s) William L. Giuffre |
8. Performing Organization Report No. | |||||
9. Performing Organization Name and Address
Cambridge Systematics, Inc. |
10. Work Unit No. | |||||
11. Contract or Grant No. DTFH61-06-D-00004 |
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12. Sponsoring Agency Name and Address
Federal Highway Administration |
13. Type of Report and Period Covered
Final Report |
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14. Sponsoring Agency Code | ||||||
15. Supplementary Notes
FHWA COTM: Stephen Gaj, Office of Asset Management |
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16. Abstract Determining an appropriate set of performance measures to use for managing the nation's highway network is a vital component of the work to preserve our existing transportation infrastructure. Recent research, such as National Cooperative Research Program (NCHRP) Project 20-74 describing an asset management framework for the Interstate Highway System (IHS), has highlighted the importance of establishing a consistent set of performance measures for communicating physical conditions of our roads, bridges, and other highway assets. The Federal Highway Administration (FHWA) Office of Asset Management developed this project to analyze bridge and pavement data across a multi-state corridor, evaluate the quality of existing performance measures, and recommend additional measures as well as further avenues of research in this area. A key deliverable involved using the Integrated Corridor Analysis Tool (ICAT), previously developed by the I-95 Corridor Coalition, as a platform to display bridge and pavement performance data. ICAT provides a map-based application, accessible via the Internet, that allows users to view, analyze, and compare performance data along an entire corridor or at a specific location. This project provides a statistical analysis of bridge and pavement data received from Virginia, Maryland, and Delaware. This analysis included looking at individual values as well as comparing values both within a state and across states. |
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17. Key Words
Interstate 95, bridge, pavement, statistical analysis, performance measure, Integrated Corridor Analysis Tool |
18. Distribution Statement No Restrictions. |
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19. Security Classif. (of this report) Unclassified |
20. Security Classif. (of this page) Unclassified |
21. No of Pages 84 |
22. Price N/A |
Form DOT F 1700.7 (8-72) Reproduction of completed pages authorized
Metric Conversion Factors
(International System of Units)
APPROXIMATE CONVERSIONS TO SI UNITS | ||||
---|---|---|---|---|
SYMBOL | WHEN YOU KNOW | MULTIPLY BY | TO FIND | SYMBOL |
LENGTH | ||||
in | inches | 25.4 | millimeters | mm |
ft | feet | 0.305 | meters | m |
yd | yards | 0.914 | meters | m |
mi | miles | 1.61 | kilometers | km |
AREA | ||||
in2 | square inches | 645.2 | square millimeters | mm2 |
ft2 | square feet | 0.093 | square meters | m2 |
yd2 | square yard | 0.836 | square meters | m2 |
ac | acres | 0.405 | hectares | ha |
mi2 | square miles | 2.59 | square kilometers | km2 |
VOLUME | ||||
fl oz | fluid ounces | 29.57 | milliliters | mL |
gal | gallons | 3.785 | liters | L |
ft3 | cubic feet | 0.028 | cubic meters | m3 |
yd3 | cubic yards | 0.765 | cubic meters | m3 |
NOTE: volumes greater than 1000 L shall be shown in m3 | ||||
MASS | ||||
oz | ounces | 28.35 | grams | g |
lb | pounds | 0.454 | kilograms | kg |
T | short tons (2000 lb) | 0.907 | megagrams (or "metric ton") | Mg (or "t") |
TEMPERATURE (exact degrees) | ||||
oF | Fahrenheit | 5 (F-32)/9 or (F-32)/1.8 |
Celsius | oC |
ILLUMINATION | ||||
fc | foot-candles | 10.76 | lux | lx |
fl | foot-Lamberts | 3.426 | candela/m2 | cd/m2 |
FORCE and PRESSURE or STRESS | ||||
lbf | poundforce | 4.45 | newtons | N |
lbf/in2 | poundforce per square inch | 6.89 | kilopascals | kPa |
APPROXIMATE CONVERSIONS FROM SI UNITS | ||||
---|---|---|---|---|
SYMBOL | WHEN YOU KNOW | MULTIPLY BY | TO FIND | SYMBOL |
LENGTH | ||||
mm | millimeters | 0.039 | inches | in |
m | meters | 3.28 | feet | ft |
m | meters | 1.09 | yards | yd |
km | kilometers | 0.621 | miles | mi |
AREA | ||||
mm2 | square millimeters | 0.0016 | square inches | in2 |
m2 | square meters | 10.764 | square feet | ft2 |
m2 | square meters | 1.195 | square yards | yd2 |
ha | hectares | 2.47 | acres | ac |
km2 | square kilometers | 0.386 | square miles | mi2 |
VOLUME | ||||
mL | milliliters | 0.034 | fluid ounces | fl oz |
L | liters | 0.264 | gallons | gal |
m3 | cubic meters | 35.314 | cubic feet | ft3 |
m3 | cubic meters | 1.307 | cubic yards | yd3 |
MASS | ||||
g | grams | 0.035 | ounces | oz |
kg | kilograms | 2.202 | pounds | lb |
Mg (or "t") | megagrams (or "metric ton") | 1.103 | short tons (2000 lb) | T |
TEMPERATURE (exact degrees) | ||||
oC | Celsius | 1.8C+32 | Fahrenheit | °F |
ILLUMINATION | ||||
lx | lux | 0.0929 | foot-candles | fc |
cd/m2 | candela/m2 | 0.2919 | foot-Lamberts | fl |
FORCE and PRESSURE or STRESS | ||||
N | newtons | 0.225 | poundforce | lbf |
kPa | kilopascals | 0.145 | poundforce per square inch | lbf/in2 |
Executive Summary
Determining an appropriate set of performance measures to use for managing the nation's highway network is a vital component of the work to preserve our existing transportation infrastructure. Recent research, such as National Cooperative Research Program (NCHRP) Project 20-74 describing an asset management framework for the Interstate Highway System (IHS), has highlighted the importance of establishing a consistent set of performance measures for communicating physical conditions of our roads, bridges, and other highway assets.
The Federal Highway Administration (FHWA) Office of Asset Management developed this project to analyze bridge and pavement data across a multi-state corridor, evaluate the quality of existing performance measures, and recommend additional measures as well as further avenues of research in this area. A key deliverable involved using the Integrated Corridor Analysis Tool (ICAT), previously developed by the I-95 Corridor Coalition, as a platform to display bridge and pavement performance data. ICAT provides a map-based application, accessible via the Internet, that allows users to view, analyze, and compare performance data along an entire corridor or at a specific location.
For this project, Cambridge Systematics (CS) performed a statistical analysis of bridge and pavement data received from Virginia, Maryland, and Delaware. This analysis included looking at individual values as well as comparing values both within a state and across states. CS concluded that:
- International Roughness Index (IRI) does not provide adequate information to judge overall pavement condition;
- Composite measures of pavement condition (i.e., measures that combine multiple distress readings into a single number) are better than individual measurements but still may not correlate well with structural adequacy; and
- Sufficiency rating and health index both provide adequate, albeit slightly different, measures of the condition of a bridge.
Based on the analysis and conclusions, CS recommended that FHWA:
- Modify the National Bridge Inventory (NBI) to obtain element data from states and use these data to calculate bridge health index on a national level;
- Develop one or more health index calculations for pavement using Highway Performance Monitoring System (HPMS) 2010+ data elements;
- Test sample road sections to determine whether a relationship exists between pavement health indexes and actual road condition and use this information to develop a true measure of structural adequacy for pavement; and
- Define models of roadway functional obsolescence and public importance that are simple to use and interpret.
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