1-7 Structurally Deficient Bridges by State: 2015
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Source: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory, available at www.fhwa.dot.gov/bridge/nbi.cfm as of October 2016.
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Source: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory, available at www.fhwa.dot.gov/bridge/nbi.cfm as of October 2016.
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Notes: Graph scales are not comparable. Seasonally adjusted data measure the real differences in data trends by adjusting for seasonal factors, such as the change in the number of days, weekends, holidays, or other seasonal...
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Notes: Graph scales are not comparable. Rail Freight Intermodal–Rail intermodal traffic includes shipping containers and truck trailers moved on rail cars. U.S. Waterways Freight–Includes tonnage carried on internal U.S....
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Source: As cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, tables 1-28, available at www.bts.gov as of October 2016.
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percent of NHS facility miles
Note: Pavement condition is measured by the International Roughness Index (IRI) which takes a longitudinal profile of pavement roughness based on one-way facility centerline miles.
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percent of NPIAS runways
Note: National Plan of Integrated Airport Systems (NPIAS) airports include commercial service airports, reliever airports, and selected general aviation airports.
Source: As cited in U.S...
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number
Mode 2004 2014 Air Air carrier aircraft 7,764 6,676 General aviation aircraft 219,426 204,408...Excel
number
Mode 2004 2014 Air Certificated airportsa 599 537 General aviation airports 19,221 18,762...Excel
miles
Mode 2004 2014 Highway Public roads 3,981,512 4,177,073 Public road lanesa 8,338,821 8,766,049...The U.S. transportation system consists of a network of roads, bridges, airports, railroads, transit systems, ports, waterways, and pipelines, connecting the Nation to the rest of the world.
1-1 Transportation Network Length 1-2 Transportation Facilities 1-3 Transportation...