Route 2A is a 98.5-mile-long east–west state highway in Massachusetts. It exists in several sections, mainly as parts of former Route 2 that have been moved or upgraded. Route 2A runs from Greenfield

Route 21 is a 13.73-mile-long south–north state highway in Massachusetts that runs between U.S. Route 20 and Route 141 in Springfield and Route 9 in Belchertown. Along the way it intersects several ma