The Interstate Highway System, which began to take shape in the 1930s, was finally funded in 1956 with the Federal Aid Highway Act of 1956. The project called for over 41,000 miles of high-speed, limited access highways. The federal government supported 90% of its funding and each state contributed the remaining 10%. These new high-speed, limited access highways linked the nation's economic centers. They changed American landscapes, lives and the way Americans do business. By 1996, there were approximately 42,700 miles of interstate in 49 states costing approximately 329 billion dollars. In 1990, President George Bush signed legislation changing its name to “The Dwight D. Eisenhower System of Interstate and Defense Highways.”