Box 1-B Condition of the U.S. Transportation System
2005 | 2011 | Percent Change | |
---|---|---|---|
AIR | |||
Airport runway condition | |||
All NPIAS Airports, percent | |||
Good condition | 75 | 80 | 5 |
Fair condition | 21 | 18 | -3 |
Poor condition | 4 | 2 | -2 |
Commercial Service Airports, percent | |||
Good condition | 79 | 82 | 3 |
Fair condition | 19 | 16 | -3 |
Poor condition | 2 | 2 | 0 |
Average age of aircraft | |||
All commercial aircraft | 11.3 | 13.3 | 17.7 |
Major airlines aircraft | 11.3 | 13.3 | 17.7 |
HIGHWAYS | |||
Highway surface condition, percent | |||
Mileage with a International Roughness Indexa over 171 | |||
Rural Routes | |||
Interstates | 1.7 | 1.7 (2009) | -0.1 |
Other principal arterials | 3.6 | 3.1 (2009) | -0.6 |
Minor arterials | 5.4 | 6.2 (2009) | 0.8 |
Collectors | 16.1 | 16.2 (2009) | 0.0 |
Urban Routes | |||
Interstates | 6.0 | 5.0 (2009) | -1.0 |
Other freeways and expressways | 7.8 | 6.5 (2009) | -1.4 |
Other principal arterials | 27.4 | 26.4 (2009) | -1.1 |
Minor arterials | 33.6 | 30.2 (2009) | -3.4 |
Collectors | 49.7 | 44.8 (2009) | -5.0 |
Condition of highway bridges, percent | |||
All structurally deficient bridges | 12.9 | 10.7 | -2.1 |
Urban structurally deficient | 2.1 | 1.9 | -0.2 |
Rural structurally deficient | 10.7 | 8.8 | -1.9 |
All functionally obsolete | 13.6 | 12.1 | -1.5 |
Urban functionally obsolete | 5.3 | 5.4 | 0.0 |
Rural functionally obsolete | 8.3 | 6.8 | -1.5 |
Average age of vehicles | |||
Passenger cars | 10.1 | 11.1 | 9.9 |
Light trucks | 8.7 | 10.4 | 19.5 |
All light vehicles | 9.5 | 10.8 | 13.7 |
RAIL | |||
Rebuilt equipment, percent | |||
Rebuilt locomotives as share of all new locomotive units | 9.22 | 29.085457 | 19.8648 |
Rebuilt freight cars as share of all new freight cars | 2.2 | 0.255242 | -1.9428 |
Age of locomotives, percent | |||
< 5 years old (2005), < 6 years old (2011) | 22.6 | 20 | -2.6393 |
6-10 years old (2005), 7-11 years old (2011) | 19.1 | 17.6 | -1.4878 |
11-15 years old (2005), 12-16 years old (2011) | 12.2 | 18.395876 | 6.17848 |
16-20 years old (2005), 17-21 years old (2011) | 7.84 | 9.7608247 | 1.92027 |
> 20 years old (2005), > 21 years old (2011) | 38.2 | 34.243299 | -3.9717 |
TRANSIT (urban) | |||
Average age of vehicles | |||
Heavy-rail passenger cars | 20.8 | 19.2 | -7.7 |
Commuter-rail passenger coaches | 18.6 | 19.4 | 4.3 |
Full-size transit buses | 7.4 | 7.9 | 6.8 |
Light-rail vehicles | 14.5 | 16.5 | 13.8 |
Transit vans | 3.4 | 3.5 | 2.9 |
Ferry boats | 25.6 | 20.3 | -20.7 |
WATER | |||
Age of locks | |||
Average age | 55.0 | 50.1 | -8.9 |
Age of U.S. flag vessels, percent | |||
< 5 years old | 13.9 | 18.7 (2010) | 4.8 |
6 to 10 years old | 17.0 | 11.5 (2010) | -5.4 |
11 to 15 years old | 9.6 | 17.1 (2010) | 7.4 |
16 to 20 years old | 5.0 | 8.8 (2010) | 3.7 |
21 to 25 years old | 18.0 | 4.3 (2010) | -13.6 |
> 25 years old | 36.6 | 39.6 (2010) | 3.0 |
a International Roughness Index values are based on objective measurements of pavement roughness. A low IRI represents a smooth riding roadway.
KEY: NPIAS—National Plan of Integrated Airport Systems
NOTE: Data is taken from multiple sources, thus the number of significant digits may vary.
SOURCES: Air—U.S. Department of Transportation, Federal Aviation Administration, as cited in U.S. Department of Transportation (USDOT), Research and Innovative Technology Administration (RITA), Bureau of Transportation Statistics (BTS), National Transportation Statistics (NTS), table 1-25, available at www.bts.gov as of January 2012. USDOT, RITA, BTS, Office of Airline Information, TranStats Database, Form 41, Schedule B-43, special tabulation, October 2010. Highways—U.S. Department of Transportation, Federal Highway Administration, as reported in USDOT RITA BTS NTS, op cit., table 1-26 (vehicles), table 1-27 (Highway surface condition), and table 1-28 (Bridges). Rail—Association of American Railroads, Railroad Facts 2006 and 2012 (Washington, DC). Transit—U.S. Department of Transportation, Federal Transit Administration, as reported in USDOT RITA BTS NTS, op cit., table 1-29. Water—U.S. Army Corps of Engineers, Navigation Data Center, General Characteristics of Locks and Waterborne Transportation Lines of the United States available at www.ndc.iwr.usace.army.mil as of January 2013.