How long did it take for I-95 to be constructed?

The construction of Interstate 95 (I-95) began in the 1950s and was part of the larger Interstate Highway System initiated by the Federal-Aid Highway Act of 1956. The entire highway, which stretches over 1,900 miles from Miami, Florida, to Houlton, Maine, was completed in segments over several decades, with the final stretches opening in the early 1990s. Therefore, the overall construction took roughly 40 years from inception to completion.