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SOURCE FOR DATA ON THIS PAGE: U.S. Department of Transportation, National Highway Traffic Safety Administration, 1998-2000 State Shoulder Belt Use Survey Results, Research Note,...
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Iowa Year Total # of Bridges Structurally deficient Functionally obsolete Total of Both # % # % # % 1996 25,624 4,694 18 3,023 12 7,717 30 1997 25,...Excel | CSV | Table Version
Iowa United StatesSOURCE: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory: Deficient Bridges by State and Highway...
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(Miles)
Interstate Other Freeways & Expressways Other Principal Arterial Urban Minor Arterial Urban Collector Total 147 0 631 85 5 Very good...Excel | CSV | Table Version
NOTE FOR DATA ON THIS PAGE: Road condition is based on measured pavement roughness using the International Roughness Index (IRI). IRI is a measure of surface condition...
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(Miles)
Interstate Other Principal Arterial Minor Arterial Major Collector Total 635 3,345 3,584 911 Very good 67 369 817 84 Good 281...Excel | CSV | Table Version
NOTE FOR DATA ON THIS PAGE: Road condition is based on measured pavement roughness using the International Roughness Index (IRI). IRI is a measure of surface condition...
All public roads: 113,377 milesInterstate: 782 milesRoad bridges: 24,632Class I railroad trackage: 2,431 milesInland waterways: 492 milesPublic use airports: 122 (10 certificated for air carrier operations)1
Vehicles and Conveyances...British thermal unit (Btu): The amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit (F) at or near 39.2 degrees F and 1 atmosphere of pressure.
Certificated airport: An airport holding an operating certificate issued by the...
The U.S. Department of Transportations (USDOT) Bureau of Transportation Statistics (BTS) collects and compiles data on the volume of revenue passengers, freight, and mail traffic handled and reported by the nations large...