The U.S. Interstate Highway System was born
On this day · 29 June 1956
On June 29, 1956, Eisenhower quietly signed the law that built 41,000 miles of interstate and remade how America moves.
On June 29, 1956, President Dwight D. Eisenhower signed the Federal-Aid Highway Act, popularly called the National Interstate and Defense Highways Act. It authorized 41,000 miles of high-speed road and $25 billion in federal funding for fiscal years 1957 through 1969 — at the time the largest public works program in American history.
Eisenhower had been sold on the idea twice over: as a young officer he endured a grueling 1919 transcontinental Army convoy, then in World War II admired Germany’s autobahns. A dedicated Highway Trust Fund, fed by fuel taxes, kept construction moving for decades.
Recovering from surgery at Walter Reed, Eisenhower signed the act with no fanfare, no statement, and no photograph of the moment.
The network that resulted now spans nearly 47,000 miles, knitting together cities and suburbs, reshaping freight, commuting, and the road trip itself. It also hollowed out some neighborhoods and railroads — a transformation whose costs and benefits Americans still debate today.
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