Transportation System Extent

All public roads: 73,498 miles
Interstate: 685 miles
Road bridges: 16,672
Class I railroad trackage: 2,011 miles
Inland waterways: 873 miles
Public use airports: 82 (13 certificated for air carrier operations)

Vehicles and Conveyances

Automobiles registered: 1.3 million
Light trucks registered: 911,000
Heavy trucks registered: 11,000
Buses registered: 10,000
Motorcycles registered: 32,000
Numbered boats: 292,000