Route 30
Route 30 highlighted in red
Route information
Maintained by MassDOT
Length	36.3817 mi[1] (58.5507 km)
Existed	by 1933–present
Major junctions
West end	Route 122 / Route 140 in Grafton
Major intersections	Route 135 in Westborough Route 9 in Westborough/Framingham Route 85 in Southborough Route 126 in Framingham I-90 / Mass Pike in Framingham/Weston Route 27 in Wayland I-95 / Route 128 in Weston Route 16 in Newton
East end	US 20 in Boston
Location
Country	United States
State	Massachusetts
Counties	Worcester, Middlesex, Suffolk
Highway system
Massachusetts State Highway System Interstate US State
← Route 28 → Route 31

Route 30 is a 36.3817-mile-long (58.5507 km) east–west arterial route, connecting Grafton with Packard's Corner in Boston. Route 30 runs roughly parallel to the Massachusetts Turnpike and Route 9, but unlike those two larger highways, takes a more meandering path from town to town. Between Boston and the Charles River it is known as Commonwealth Avenue, along most of this route is part of the course of the Boston Marathon.

Route 30 has two interchanges with the Mass Pike, at Exits 13 in Framingham and 14/15 in Weston; the latter also includes the junction with Interstate 95 (Route 128). It also has two interchanges with Route 9, one in Westborough and one at the Southborough-Framingham border (where the two highways have an interchange without actually crossing), as well as a section further east in Framingham that runs concurrently with Route 9, for a total of four junctions between Routes 9 and 30.

Route description

Eastbound in Southborough
42°18′26.7″N 71°33′31.9″W / 42.307417°N 71.558861°W / 42.307417; -71.558861

Route 30 begins in North Grafton at Route 122, where it shares a roadway briefly with Route 140. The route travels northeast, passing the Tufts University Cummings School of Veterinary Medicine. The road continues into Westborough, where it crosses Route 135 at a rotary and interchanges with Route 9 to the northeast. After crossing Route 9, Route 30 turns eastward, crossing underneath Interstate 495 without an interchange. The route continues east into Southborough, where it crosses Route 85. Route 30 interchanges once again with Route 9 (without actually crossing it) and continues to parallel the highway into Framingham. In Framingham, Route 30 joins Route 9 in an approximately one-mile concurrency, and leaves via an interchange with Route 126 (heading eastward, there is a very brief concurrency between routes 30 and 126; heading westward, Route 30 joins Route 9 one block west of the Route 126 interchange). Route 30 continues to the northeast and interchanges with the Massachusetts Turnpike. Route 30 continues northeast, crossing over the Mass. Pike, and very briefly entering Natick before entering Wayland. In Wayland, Route 30 crosses Route 27 and continues northeast, very closely paralleling the Mass Pike. Route 30 continues into Weston, where it enters a large interchange with the Mass. Pike and Interstate 95 (Route 128). Upon crossing over I-95 and the Charles River, there is a drastic change in scenery as one crosses from Boston's suburbs to the metropolitan area. With this, Route 30 enters Newton, crossing over the Mass Pike again and then crossing Route 16. Route 30 winds to the east, passing Boston College in Chestnut Hill and entering the Boston neighborhood of Brighton. Route 30 ends approximately 2 miles (3.2 km) west of Route 2 at U.S. Route 20, which provides access to Kenmore Square and Downtown Boston.

Major intersections

County	Location	mi	km	Destinations	Notes
Worcester	Grafton	0.0	0.0	Route 122 / Route 140 south to Mass Pike – Worcester, Uxbridge, Foxboro, Taunton	Western terminus; southern terminus of Route 140 concurrency
		0.3	0.48	Route 140 north – Shrewsbury, Westminster	Northern terminus of Route 140 concurrency
	Westborough	6.3	10.1	Route 135 – Hopkinton, Framingham, Northborough, Worcester	Roundabout
		7.7	12.4	Route 9 – Worcester, Amherst, Framingham, Boston	Grade-separated interchange
	Southborough	11.9	19.2	Route 85 – Marlboro, Hopkinton
				To Route 9 – Worcester, Boston	Via Pleasant Street Connector
Middlesex	Framingham	17.9	28.8	Route 9 west – Shrewsbury, Worcester	Interchange; western terminus of concurrency with Route 9
		18.8	30.3	Route 9 east – Natick, Boston	Eastern terminus of westbound concurrency with Route 9 Route 30 eastbound and westbound split paths
		19.1	30.7	Route 9 east – Natick, Boston	Eastern terminus of eastbound concurrency with Route 9
		19.2	30.9	Route 126 south – Framingham, Holliston	Southern terminus of eastbound concurrency with Route 126
		19.6	31.5	Route 126 north – Wayland, Concord	Northern terminus of eastbound concurrency with Route 126
		20.5	33.0	I-90 / Mass Pike – Springfield, Boston	Exit 117 on I-90 / Mass Pike
	Wayland	22.1	35.6	Route 27 – Cochituate, Concord, Natick, Sherborn
	Weston	27.9	44.9	I-90 / Mass Pike / I-95 / Route 128 / River Road – Boston, Albany, NY, Providence, RI, Portsmouth, NH	Weston Interchange: exits 123A-123B on I-90 / Mass Pike; exit 39A on I-95 / Route 128
Charles River		28.1	45.2	Bridge (western end of Commonwealth Avenue)
Middlesex	Newton	29.7	47.8	Route 16 – West Newton, Watertown, Wellesley, Natick	Boston Marathon joins Route 30 between miles 17-18 of route.
Suffolk	Boston	36.4	58.6	US 20 east (Commonwealth Avenue) to Route 2	Eastern terminus; Packard's Corner; no eastbound left turn to US 20 west
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Electronic toll collection       Incomplete access

References

Wikimedia Commons has media related to Massachusetts Route 30.