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There are 70 primary interstate highways in the 48 contiguous United States as well as five former and two future primary interstate highways. This number does not include auxiliary Interstate Highways . Serves six states: Texas, Mississippi, Kentucky, Indiana, Michigan. Planned/started in 3 more: Louisiana, Arkansas, Tennessee.
After working with states to get their approval, the committee expanded the highway system to 75,800 miles (122,000 km), or 2.6% of total mileage, over 50% more than the plan approved August 4. The skeleton of the numbering plan was suggested on August 27 by Edwin Warley James of the BPR, who matched parity to direction, and laid out a rough grid.
Under the most common international definition of high-speed rail (speeds above 155 mph (250 km/h) on newly built lines and speeds above 124 mph (200 km/h) on upgraded lines), Amtrak 's Acela is the United States' only true high-speed rail service, reaching 150 mph (240 km/h) over 49.9 mi (80.3 km) of track along the Northeast Corridor. [ 2 ...
The National Highway System Designation Act of 1995 ( Pub. L. 104–59 (text) (PDF), 109 Stat. 568, COMPS-1425) is a United States Act of Congress that was signed into law by President Bill Clinton on November 28, 1995. The legislation designated about 160,955 miles (259,032 km) of roads, including the Interstate Highway System, as the NHS.
Interstate 10 ( I-10) is the southernmost transcontinental highway in the Interstate Highway System. I-10 is the fourth-longest Interstate in the United States at 2,460.34 miles (3,959.53 km), following I-90, I-80, and I-40.
The US has the 2nd largest Exclusive Economic Zone of 11,351,000 km 2 (4,383,000 sq mi). By total area ( water as well as land), the United States is either slightly larger or smaller than the People's Republic of China, making it the world's third or fourth-largest country.
The contiguous United States (officially the conterminous United States) consists of the 48 adjoining U.S. states and the District of Columbia of the United States of America in central North America. [1] [2] The term excludes the only two non- contiguous states, which are Alaska and Hawaii (they are also the last two states to be admitted to ...
U.S. Route 40 or U.S. Highway 40 ( US 40 ), also known as the Main Street of America (a nickname shared with U.S. Route 66 ), [3] [4] is a major east–west United States Highway traveling across the United States from the Mountain States to the Mid-Atlantic States. As with most routes whose numbers end in a zero, US 40 once traversed the ...