Massachusetts Route 4

State highway in Middlesex County, Massachusetts, US

Route 4 is an 18.26-mile-long (29.39 km) state highway in northeastern Massachusetts. It runs south to north, serving many of Boston's western and northwestern suburbs, from an interchange with Route 2 in Lexington northwest to an intersection with Route 3A in North Chelmsford. Much of it, north of Lexington, runs parallel to U.S. Route 3. The entire route is contained within Middlesex County.

This keyword could refer to multiple things. Here are some suggestions: