There have been two state highways designated Route 17 in Massachusetts:
The first Route 17 extended from Great Barrington to the New York state line in the 1930s and was replaced by Route 23.The second Route 17 was assigned to U.S. Route 1 after the U.S. Highway was moved to a freeway from Danvers to Salisbury in the 1950s. After Interstate 95 was assigned to the freeway, the U.S. Highway was restored to its old course.