Massachusetts Route 27

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Route 27

Route 27 highlighted in red
Route information
Maintained by MassDOT
Length73.4403 mi[1] (118.1907 km)
Existedby 1933–present
Major junctions
South endMA Route 106.svg Route 106 in Kingston
Major intersectionsMA Route 24.svg Route 24 in Brockton
US 1.svg U.S. Route 1 in Walpole
MA Route 9.svg Route 9 in Natick
US 20.svg U.S. Route 20 in Wayland
MA Route 2.svg Route 2 in Acton
North endMA Route 4.svg Route 4 in Chelmsford
CountryUnited States
CountiesPlymouth, Norfolk, Middlesex
Highway system
Route 25 Route 28

Route 27 is a 73.44-mile-long (118.19 km) south–north state highway in eastern Massachusetts. Its southern terminus is at Route 106 in Kingston and its northern terminus is at Route 4 in Chelmsford. Along the way it intersects several major highways including Route 24 in Brockton, U.S. Route 1 (US 1) in Walpole, Route 9 in Natick, US 20 in Wayland, and Route 2 in Acton.

Route description

The Isaac Davis Monument in Acton, located along Route 27

Route 27 runs in a sweeping arc from Kingston to Chelmsford. For most of its route, it acts as an intermediate route between Interstate 95 and Interstate 495.

Route 27 begins in Kingston at Route 106, approximately 1-1/4 miles west of Route 3. It heads northwest towards Brockton, passing through Pembroke, Hanson, East Bridgewater and Whitman. In Brockton the road shares a triple concurrency with Route 28 and Route 123 Eastbound (Route 123 Westbound only intersects with the route). From the center of town, Route 27 heads northwest, past the Westgate Mall, over Route 24 at Exits 33A-B (formerly 18A-B), and past Good Samaritan Hospital before passing into Norfolk County via Stoughton.

In Stoughton, the road has a brief concurrency with Route 138 in the center of town. It passes just south of the town of Canton before making a large loop through the town of Sharon. It crosses over Interstate 95 without access, between Exits 19 and 21 (formerly 9 and 10 respectively), both of which are accessible via US Route 1 nearby. It then crosses through Walpole and Medfield before crossing the Charles River into Middlesex County and the town of Sherborn.

In Sherborn, the road begins a more northerly direction, with a short concurrency with Route 16 in the center of town. The road heads through the center of Natick, passing the town green and crossing Route 135, which carries the Boston Marathon at that point. Route 27 crosses over Route 9 with a four-way exit ramp system, just east of Lake Cochituate, the Natick Mall and the Golden Triangle retail area. Route 27 passes into Wayland and under the Massachusetts Turnpike, which it accesses via Route 30, just north of the Pike.

In Wayland, Route 27 has a 1.2-mile concurrency with Route 126, passing through the center of town and intersecting US Route 20. The road then crosses the Sudbury River into Sudbury and through the historic town center. It passes into Maynard, having a short, 0.1-mile concurrency with Route 62 over the Assabet River, before heading north into Acton. It crosses Route 2 at Exit 117 (formerly 42) before crossing through the town center, past the Isaac Davis Monument. It sweeps by Carlisle before directly crossing into Westford, passing through the southeast corner of town before heading into Chelmsford. Route 27 ends at the center of town, at the intersection of Routes 4, 110 and 129, just south of Interstate 495 and U.S. Route 3.


Route 27's original form was identical to the modern route south of Wayland, with the exception of a bypass built in 1963 from the Charles River at the Sherborn-Medfield line to Route 109 in Medfield center.[2]

North of Wayland the route followed current Route 126 into Concord. It came into its current form by 1939. However, historical maps from the U.S. Department of the Interior from 1943 show Route 27 running concurrent with US 20 from Wayland Center to Concord Road in Sudbury, then following Concord Road to Sudbury Center, where it resumed its current alignment on Hudson Road.[3]

Major intersections

Southbound entering Medfield
Junction of US 20, MA 27 & MA 126
Granite road sign in Sudbury. The left side marks Route 27.
Antique road signs in a well in Acton
Northern terminus of Route 27 in Chelmsford

Route 106 to Route 3 / Route 3A – Plympton
Southern terminus
Pembroke5.69.0 Route 36
Hanson7.411.9 Route 58 – Halifax, Wareham, Hanson
East Bridgewater10.817.4 Route 14 – East Bridgewater, Brockton
Whitman14.423.2 Route 18 – Bridgewater, New Bedford, Abington, South Weymouth
Route 14 east – Hanson, Duxbury
Western terminus of Route 14

Route 28 south / Route 123 south – Bridgewater, Cape Cod
Southern terminus of concurrency with Routes 28 and 123 (southbound only)
Route 28 / Route 123 east – Abington, Norwell
Northern terminus of concurrency with Route 123 (southbound only)
Route 28 north – Randolph
Northern terminus of concurrency with Route 28
20.432.8 Route 24 – Randolph, Boston, Taunton, Fall RiverExits 33A-B on Route 24

Route 138 south / Route 139 east – Taunton, Randolph
Southern terminus of concurrency with Route 138; western terminus of Route 139
Route 138 north – Boston
Northern terminus of concurrency with Route 138; no southbound access to Route 138 north

To I-95 north – Boston
Access via Norwood Street

US 1 to I-95 south – Norwood, Dedham, Providence, RI
33.754.2 Route 1A – Norwood, Wrentham
Medfield37.961.0 Route 109 – Westwood, Boston, Millis, Milford
Charles River40.865.7Bridge
Route 115 south – Millis
Northern terminus of Route 115
Route 16 west – Holliston
Southern terminus of Route 16 concurrency
Route 16 east – South Natick
Northern terminus of Route 16 concurrency
Natick46.775.2 Route 135 – Wellesley, Needham, Framingham, Hopkinton
48.077.2 Route 9 – Wellesley Hills, Boston, Framingham, WorcesterGrade-separated interchange
Wayland49.379.3 Route 30 – Framingham, Worcester, Weston, BostonAccess to Mass Pike via Route 30 west
Route 126 south (Old Connecticut Road) – Framingham, Ashland
Southern terminus of Route 126 concurrency
52.684.7 US 20 – Marlboro, Boston
Route 126 north (Concord Road) – Lincoln, Concord
Northern terminus of Route 126 concurrency
Maynard59.395.4 Route 117 – Weston, Waltham, Stow, Leominster
60.096.6 Route 62 – Concord, Stow0.1-mile-long (0.2 km) concurrency
Acton63.1101.5 Route 111 – Boxboro, ConcordAdditional access to Route 2 east via Route 111 south
63.4102.0 Route 2 – Cambridge, Boston, Athol, GreenfieldInterchange; exit 117 on Route 2
65.7105.7 Route 2A / Route 119 – East Acton, Concord, Groton, Ayer
Westford68.5110.2 Route 225 – Westford, Groton, Carlisle, Bedford
Route 4 to Route 110 – Bedford, Lexington, Lowell, Nashua, NH
Northern terminus; to Route 129, I-495, US 3 via Route 4 north
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Executive Office of Transportation, Office of Transportation Planning - 2005 Road Inventory
  2. ^ "New England Road Builders Association". 43 (3): 11–12. {{cite journal}}: Cite journal requires |journal= (help)
  3. ^