2-1 Vehicle Miles Traveled

Excel

millions

1-7 Structurally Deficient Bridges by State: 2012

Table Version | Excel

Source: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory, available at www.fhwa.dot.gov/bridge/nbi.cfm as of October 2013.

1-6 Structurally Deficient Bridges: 1990-2012

Table Version | Excel

Source: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory, available at www.fhwa.dot.gov/bridge/nbi.cfm as of October 2013.

1-5 National Highway System Pavement Condition

Table Version | Excel

Note: Pavement condition is measured by the International Roughness Index (IRI).

Source: U.S. Department of Transportation, Federal Highway Administration, 2010 Status of the Nation...

1-4 Airport Runway Pavement Condition

Table Version | Excel

Note: National Plan of Integrated Airport Systems (NPIAS) airports include commercial service airports, reliever airports, and selected general aviation airports.

Source: U.S. Department of...

1-3 Transportation Vehicles

Excel

number

1-2 Transportation Facilities

Excel

number

1-1 Transportation Network Length

Excel

miles

Glossary

Air carrier: Certificated provider of scheduled and nonscheduled services.

Chained dollars: A method to measure real changes in dollar values between years that uses chain-type indexes, rather than constant dollars. The method first calculates the real changes between adjacent...

7 Environment

The U.S. transportation system is a major consumer of energy and generates significant environmental impacts.