Route 4 (Massachusetts) - AbsoluteAstronomy.com

Route 4 is an 18.3 miles (29.5 km) long state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

in northeastern Massachusetts

Massachusetts

The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

. It runs south to north, serving many of Boston

Boston

Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had...

's western and northwestern suburbs, from an interchange with Route 2 in Lexington

Lexington, Massachusetts

Lexington is a town in Middlesex County, Massachusetts, United States. The population was 31,399 at the 2010 census. This town is famous for being the site of the first shot of the American Revolution, in the Battle of Lexington on April 19, 1775.- History :...

northwest to an intersection with Route 3A

Massachusetts Route 3A

Route 3A is a state highway in eastern Massachusetts, which parallels Route 3 and U.S. Route 3 from Cedarville in southern Plymouth to Tyngsborough at the New Hampshire state line....

in North Chelmsford

North Chelmsford, Massachusetts

North Chelmsford is an unincorporated village in the town of Chelmsford, Massachusetts, United States. Although North Chelmsford has its own zip code , library, post office, police station, fire station, and local calling area, it is run by the same local town government and is part of the same...

. Much of it, north of Lexington, runs parallel to U.S. Route 3

U.S. Route 3

U.S. Route 3 is a north–south United States highway that runs from its southern terminus in Cambridge, Massachusetts through New Hampshire to its terminus near Third Connecticut Lake at the Canadian border, where the road continues north as Quebec Route 257.In New Hampshire parts of US 3 are...

(the Northwest Expressway

Northwest Expressway (Boston)

The Northwest Expressway is a 19.3-mile expressway that carries U.S. Route 3 from its junction with Interstate 95 in Burlington north to the New Hampshire state line in Tyngsborough, where it connects to the Frederick E...

). The entire route is contained within Middlesex County

Middlesex County, Massachusetts

-National protected areas:* Assabet River National Wildlife Refuge* Great Meadows National Wildlife Refuge* Longfellow National Historic Site* Lowell National Historical Park* Minute Man National Historical Park* Oxbow National Wildlife Refuge...

Concurrency with Route 225

Route 4 begins at Route 2's Exit 56 interchange in Lexington, just west of the border with Arlington

Arlington, Massachusetts

Arlington is a town in Middlesex County, Massachusetts, United States, six miles northwest of Boston. The population was 42,844 at the 2010 census.-History:...

. This interchange also serves as Route 225's eastern terminus, and the two routes begin overlapped with one another. Routes 4 and 225 proceed northward on Watertown Street, turning onto Massachusetts Avenue

Massachusetts Avenue

Massachusetts Avenue may refer to:* Massachusetts Avenue , Massachusetts, also:** Massachusetts Avenue , a subway station on the MBTA Orange Line...

and meeting Route 2A in East Lexington, briefly sharing pavement with it. The two routes continue through the center of Lexington, where Mass Ave splits to the west, and Routes 4 and 225 continue northwest on Bedford Street. The concurrency passes near North Lexington and interchanges with Interstate 95

Interstate 95 in Massachusetts

Interstate 95 is the main highway on the East Coast of the United States, paralleling the Atlantic Ocean from Florida to Maine. The Massachusetts portion of the highway enters from the state of Rhode Island in Attleboro and travels in a northeasterly direction to the junction with Route 128 in...

(Route 128) at Exit 31, before continuing northwest into the town of Bedford

Bedford, Massachusetts

Bedford is a town in Middlesex County, Massachusetts, United States. It is within the Greater Boston area, north-west of the city of Boston. The population of Bedford was 13,320 at the 2010 census.- History :...

. Routes 4 and 225 pass into the center of town, meeting Route 62 and running concurrent through the town center. After passing through town, Route 62 splits to the west, while Routes 4 and 225 turn northward, splitting themselves soon thereafter; Route 225 to the northwest and Route 4 to the north.

Northern segment

Route 4 proceeds northward out of Bedford by itself, where it begins to parallel US-3 as it passes into Billerica

Billerica, Massachusetts

Billerica is a town in Middlesex County, Massachusetts, United States. The population was 40,243 at the 2010 census. It is the only town named Billerica in the United States and borrows its name from the town of Billericay in Essex, England.- History :...

. Route 4 does not intersect any other numbered highways in the town, but does intersect two local roads - Concord Road and Treble Cove Road - which provide nearby access to US-3, which lies to the east. Route 4 continues north into Chelmsford

Chelmsford, Massachusetts

Chelmsford is a suburban town in Middlesex County, Massachusetts in the Greater Boston area. As of the 2010 United States Census, the town's population was 33,802. The Census Bureau's 2008 population estimate for the town was 34,409, ranking it 14th in population among the 54 municipalities in...

, where it meanders towards the center of town. Near the center, Route 4 intersects the northern end of Route 27 at a rotary-type intersection, and then crosses Route 110, very briefly sharing pavement. Continuing to the north, Route 4 has a half-interchange with Interstate 495

Interstate 495 (Massachusetts)

Interstate 495 is the designation of an Interstate Highway half-beltway in Massachusetts. It was the longest auxiliary Interstate Highway of its kind—measuring 120.74 miles —until 1996, when the PA Route 9 section of the Pennsylvania Turnpike was redesignated as Interstate 476, making it about ...

at Exit 33. This interchange provides southbound-only access to I-495 and is a northbound-only exit from the freeway. Access to I-495 northbound is available via Route 110 East, at the nearby Exit 34 interchange. Route 4 continues to the northwest, where it comes to a rotary interchange with US-3 at Exit 32, crossing over the freeway, and continuing another half-mile to the northwest where it ends at an intersection with Route 3A in North Chelmsford

North Chelmsford, Massachusetts

. Recently, there have been various maps showing Route 4 being cosigned with Route 3A; extending to the nearby town of Tyngsborough

Tyngsborough, Massachusetts

Tyngsborough is a town located in the northwest section of Middlesex County, Massachusetts. Composed of of land and surface water, Tyngsborough borders the towns of Dunstable, Groton, Westford, Chelmsford, Dracut, and the City of Lowell, as well as the New Hampshire communities of Hudson,...

(terminating at Route 113);, but Route 4 has ended at Route 3A in North Chelmsford for years. There may be a possibility of this being a new modification to both routes, but there also may be a possibility of the various maps that show the concurrency having inaccurate information as well. Therefore, the true end of Route 4 (as of late) is somewhat controversial.

Junction list

County	Location	Mile	Roads intersected	Notes
Middlesex Middlesex County, Massachusetts -National protected areas:* Assabet River National Wildlife Refuge* Great Meadows National Wildlife Refuge* Longfellow National Historic Site* Lowell National Historical Park* Minute Man National Historical Park* Oxbow National Wildlife Refuge...	Lexington Lexington, Massachusetts Lexington is a town in Middlesex County, Massachusetts, United States. The population was 31,399 at the 2010 census. This town is famous for being the site of the first shot of the American Revolution, in the Battle of Lexington on April 19, 1775.- History :...	0.00	Route 2 Route 225	Southern terminus of Route 4. Eastern terminus of Route 225; southern terminus of Route 4/225 concurrency. Route 2 Exit 56.
		1.4	Route 2A East	Southern terminus of Route 2A/4/225 concurrency.
		1.5	Route 2A West	Northern terminus of Route 2A/4/225 concurrency.
		4.4	Interstate 95 Interstate 95 in Massachusetts Interstate 95 is the main highway on the East Coast of the United States, paralleling the Atlantic Ocean from Florida to Maine. The Massachusetts portion of the highway enters from the state of Rhode Island in Attleboro and travels in a northeasterly direction to the junction with Route 128 in... Route 128	I-95 Exits 31A-B. To U.S. Route 3 U.S. Route 3 U.S. Route 3 is a north–south United States highway that runs from its southern terminus in Cambridge, Massachusetts through New Hampshire to its terminus near Third Connecticut Lake at the Canadian border, where the road continues north as Quebec Route 257.In New Hampshire parts of US 3 are... .
	Bedford Bedford, Massachusetts Bedford is a town in Middlesex County, Massachusetts, United States. It is within the Greater Boston area, north-west of the city of Boston. The population of Bedford was 13,320 at the 2010 census.- History :...	6.2	Route 62 East	Eastern terminus of Route 4/62/225 concurrency.
		7.2	Route 62 West	Western terminus of Route 4/62/225 concurrency.
		7.4	Route 225 West	Northern terminus of Route 4/225 concurrency.
	Chelmsford Chelmsford, Massachusetts Chelmsford is a suburban town in Middlesex County, Massachusetts in the Greater Boston area. As of the 2010 United States Census, the town's population was 33,802. The Census Bureau's 2008 population estimate for the town was 34,409, ranking it 14th in population among the 54 municipalities in...	15.5	Route 27	Northern terminus of Route 27.
		15.6	Route 110	To Interstate 495 Interstate 495 (Massachusetts) Interstate 495 is the designation of an Interstate Highway half-beltway in Massachusetts. It was the longest auxiliary Interstate Highway of its kind—measuring 120.74 miles —until 1996, when the PA Route 9 section of the Pennsylvania Turnpike was redesignated as Interstate 476, making it about ... North, via Route 110 East.
		16.0	Interstate 495 Interstate 495 (Massachusetts) Interstate 495 is the designation of an Interstate Highway half-beltway in Massachusetts. It was the longest auxiliary Interstate Highway of its kind—measuring 120.74 miles —until 1996, when the PA Route 9 section of the Pennsylvania Turnpike was redesignated as Interstate 476, making it about ... South	Partial interchange; northbound access (Exit 33) and southbound access from Rte. 4 to I-495 only.
		17.5	U.S. Route 3 U.S. Route 3 U.S. Route 3 is a north–south United States highway that runs from its southern terminus in Cambridge, Massachusetts through New Hampshire to its terminus near Third Connecticut Lake at the Canadian border, where the road continues north as Quebec Route 257.In New Hampshire parts of US 3 are...	US-3 Exit 32. Flyover rotary with Route 4, Old Westford Rd & Drum Hill Road.
	North Chelmsford North Chelmsford, Massachusetts North Chelmsford is an unincorporated village in the town of Chelmsford, Massachusetts, United States. Although North Chelmsford has its own zip code , library, post office, police station, fire station, and local calling area, it is run by the same local town government and is part of the same...	18.26	Route 3A Massachusetts Route 3A Route 3A is a state highway in eastern Massachusetts, which parallels Route 3 and U.S. Route 3 from Cedarville in southern Plymouth to Tyngsborough at the New Hampshire state line....	Northern terminus of Route 4.