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Which states have interstate highways?
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What is the Interstate Highway System?
Highway shields for Interstate 80, Business Loop Interstate 80, and the Eisenhower Interstate System Primary Interstate Highways in the 48 contiguous states. Alaska, Hawaii, and Puerto Rico also have Interstate Highways. System information Length 48,756 mi [a] (78,465 km) Formed June 29, 1956 ; 67 years ago (1956-06-29) Highway names Interstates Interstate X (I-X) System links Interstate ...
As of 1989, the United States Numbered Highways system had a total length of 157,724 miles (253,832 km). [3] Except for toll bridges and tunnels , very few U.S. Routes are toll roads .
Oct 21, 2023 · This US road map displays major interstate highways, limited-access highways, and principal roads in the United States of America. It highlights all 50 states and capital cities, including the nation’s capital city of Washington, DC. Both Hawaii and Alaska are inset maps in this US road map.
Aug 20, 2018 · Every U.S. Metropolitan area with a population over one million overlapped with a highway map. Northeastern U.S. states (New York, Connecticut, Pennsylvania) with large cities especially contain many Interstate Highways. The map of the United States below shows how far each county is from Interstates system.
Construction proceeded rapidly, and by 1991 the system was considered officially completed. As of 2010, the Interstate system totaled more than 47,100 miles. Major Interstate routes are designated by one or two-digit numbers. Routes running north and south are assigned odd numbers, while east-west routes are assigned even numbers.
The U.S. Roads Portal. Shortcut. P:USRD. The highway system of the United States is a network of interconnected state, U.S., and Interstate highways. Each of the fifty states, the District of Columbia, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands, and the U.S. Virgin Islands own and maintain a part of this vast system ...
The final estimate of the cost of the Interstate System was issued in 1991. It estimated that the total cost would be $128.9 billion, with a Federal share of $114.3 billion. This estimate covered only the mileage (42,795 miles) built under the Interstate Construction Program.
