Massachusetts Route 27

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Route 27 marker

Route 27
Route information
Length73.4403 mi[1] (118.1907 km)
Existedby 1933–present
Major junctions
South endMA Route 106.svg Route 106 in Kingston
 MA 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
CountiesPlymouth, Norfolk, Middlesex
Highway system
Route 26Route 28

Route 27 is a south–north highway in eastern Massachusetts that runs for 73.4 miles.

Route description[edit]

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 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 9 and 10, 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 Collection 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 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.[citation needed] 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[edit]

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
PlymouthKingston0.000.00 Route 106 – Bridgewater, Kingston
Evergreen Street
Southern terminus of Route 27
To Routes 3A south, 80 & 3 via Route 106
To Routes 3A north & 53 via Evergreen Street
Pembroke5.69.0 Route 36 – Halifax, Hanson
Hanson7.411.9 Route 58 – Halifax, Wareham, Hanson
East Bridgewater10.817.4 Route 14 – East Bridgewater, Brockton, Hanson
Whitman14.423.2 Route 18 – Bridgewater, New Bedford, Abington, South Weymouth
Brockton16.226.1 Route 14 east – Hanson, DuxburyWestern terminus of Route 14.
18.129.1 Route 28 south / Route 123 south – Bridgewater, Cape CodBegin concurrency with Routes 28 Southbound & 123 Eastbound only
18.229.3 Route 28 / Route 123 east – Abington, NorwellEastern terminus of concurrency with Route 123 Eastbound
18.329.5 Route 28 north – RandolphNorthern terminus of concurrency with Route 28
20.432.8 Route 24 – Boston, Fall RiverRoute 24 Exits 18A-B
NorfolkStoughton23.938.5 Route 138 south – Taunton
Route 139 east – Randolph, Holbrook
Western terminus of Route 139; southern terminus of concurrency with Route 138.
24.038.6 Route 138 north – BostonNorthern terminus of Route 27/138 concurrency.
No access from Route 27 south to Route 138 north.
Sharon31.550.7 I‑95No direct access; access to I-95 northbound exit 10 via Coney Street in Walpole.
Walpole31.851.2 US 1 – Norwood, Dedham, Providence, RIAccess to I-95 exit 9 via US 1 South.
33.754.2 Route 1A – Norwood, Dedham, Wrentham
Medfield37.961.0 Route 109 – Westwood, Boston, Millis, Milford
Charles River40.865.7Charles River crossing
MiddlesexSherborn41.166.1 Route 115 south – MillisNorthern terminus of Route 115.
43.570.0 Route 16 west – HollistonSouthern terminus of Route 16 concurrency.
43.870.5 Route 16 east – South NatickNorthern terminus of Route 16 concurrency.
Natick46.775.2 Route 135 – Wellesley, Needham, Framingham, Hopkinton
48.077.2 Route 9 – Wellesley Hills, Boston, Framingham, WorcesterFour-way interchange over Route 9
49.078.9 I‑90 (Mass Pike)No direct access; access via Route 30
Wayland49.379.3 Route 30 – Framingham, Worcester, Weston, BostonAccess to Mass Pike via Route 30 westbound
51.582.9 Route 126 south – Framingham, AshlandSouthern terminus of Route 27/126 concurrency.
52.684.7 US 20 – Worcester, Boston
52.985.1 Route 126 north – Lincoln, ConcordNorthern terminus of Route 27/126 concurrency.
Maynard59.395.4 Route 117 – Weston, Waltham, Stow, Bolton
60.096.6 Route 62 – Concord, Stow0.1 mile concurrency.
Acton63.1101.5 Route 111 – West Acton, Ayer, ConcordAdditional access to Route 2 eastbound via Route 111
63.4102.0 Route 2 – Concord, Boston, Leominster, FitchburgRoute 2 exit 42; two-way interchange
65.7105.7 Route 2A / Route 119 – East Acton, Concord, Littleton, Ayer
Westford68.5110.2 Route 225 – Westford, Groton, Carlisle, Bedford
Chelmsford73.44118.19 Route 4 – Bedford, North ChelmsfordNorthern terminus of Route 27.
To Route 110 / Route 129, via Route 4 North.
To I‑495 / US 3, via Route 4 North and Route 110 East.
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  •       Closed/former
  •       Concurrency terminus


Route map:

KML is from Wikidata
  1. ^ Executive Office of Transportation, Office of Transportation Planning - 2005 Road Inventory
  2. ^ "New England Road Builders Association". 43 (3): 11–12.
  3. ^