Interstate 95 (I-95) is a part of the Interstate Highway System that parallels the East Coast of the United States from Miami, Florida in the south to Houlton, Maine, in the north. In the U.S. state of Massachusetts, it spans 91 miles (146 km) along a north–south axis. It is the third-longest Interstate Highway in Massachusetts, behind I-90 (the Massachusetts Turnpike) and I-495, while I-95 in full is the longest north–south Interstate, and sixth-longest Interstate Highway in the United States.