Interstate Highway System

[ in-ter-steyt hahy-wey sis-tuhm ]

  1. Official name Dwight D. Eisenhower National System of Interstate and Defense Highways . a network of U.S. highways connecting the 48 conterminous states, begun in the 1950s and estimated to carry about 25 percent of the nation's traffic: also established in Alaska, Hawaii, and Puerto Rico, but without physical connections to other states or territories.: Compare National Highway System.

Words Nearby Interstate Highway System Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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