100th Anniversary – An Evolving Partnership

In honor of the 100th anniversary of the American Association of State Highway and Transportation Officials (AASHTO), this article looks at the State-Federal collaboration during the interstate era. Though construction of the interstate system began in 1956, the history of the system dates back to the 1930s, during which proposals for transcontinental superhighways were common. However, it was not until President Eisenhower signed the Federal-Aid Highway Act of 1956 that the interstate system was truly established. The construction of the interstate system was driven by the partnership of AASHTO and the Federal Highway Administration. AASHTO continues to work to meet the challenges of the United States transportation network.