Interstate Highway

The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System, is a network of highways in the United States. The Interstate Highway System is a separate system within the larger National Highway System. With very few exceptions, Interstate highways are controlled-access freeways, allowing for safe high-speed driving when traffic permits. They are assigned a special level of funding at the federal level. Despite this federal funding, these highways are owned, designed, built and maintained by the state in which they are located, with the only exception being the federally-owned Woodrow Wilson Bridge on the Capital Beltway (I-95/I-495).

See also

• Autobahn
• Freeway
• Gas tax
• Highway patrol
• Non-motorized vehicle access on freeways
• List of roads and highways
• Mile-log
• Parkway
• Ramp meter
• Speed limit
• Toll road
• Traffic light
• United States highway
• National Highway System
• List of major freeway systems
• Controlled-access highway