Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, or the Eisenhower Interstate System, is a network...

Auxiliary Interstate Highways (also called three-digit Interstate Highways) are a subset of highways within the United States' Interstate Highway System. The...

are 70 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one-...

in the Interstate Highway system, where the roadway carrying an Interstate shield does not conform to the standards set by the Federal Highway Administration...

States, future Interstate Highways include proposals to establish new mainline (one- and two-digit) routes to the Interstate Highway System. Included in...

publication A Policy on Design Standards: Interstate System. For a certain highway to be considered an Interstate Highway, it must meet these construction requirements...

of [the Interstate Highway System']s primary importance to the national defense". The money for the Interstate Highway and Defense Highways was handled...

S. Highway System was approved on November 11, 1926. Expansion of the U.S. Highway System continued until 1956, when the Interstate Highway System was...

maintenance and operations of the Interstate Highways. The Interstate Highway System in Alaska comprises four highways that cover 1,082.22 miles (1,741...

The National Highway System (NHS) is a network of strategic highways within the United States, including the Interstate Highway System and other roads...