Route 138 (Massachusetts)

Route 138
Map of southeastern Massachusetts with Route 138 highlighted in red
Route information
Maintained by MassDOT
Length:	43.58 mi (70.14 km)
Major junctions
South end:	Route 138 in Tiverton, RI
	I‑195 in Fall River US 6 in Fall River/Somerset US 44 / Route 140 in Taunton I‑495 in Raynham I‑93 / US 1 in Canton
North end:	Route 28 in Milton
Location
Counties:	Bristol, Norfolk
Highway system
Massachusetts State Highway System Interstate US State ← Route 137 Route 139 →

Route 138 is a north–south state highway in Massachusetts. From the state line in Tiverton, Rhode Island to Milton, Route 138 runs as an extension of Rhode Island Route 138, which is itself an extension of Connecticut Route 138.

Running generally north, Route 138 crosses from Rhode Island into Fall River, where it meets the southern terminus of Route 79 at exit 5 of Interstate 195, then begins a concurrency with Route 79 and later, U.S. Route 6. Routes 138 and 6 then travel off of Route 79 and over the Brightman Street Bridge into Somerset, where the concurrency with U.S. Route 6 splits at an intersection with Route 103. Route 138 proceeds through Dighton and into Taunton, intersecting Route 140 and U.S. Route 44 at Taunton Green. In Raynham, the route has an interchange with Interstate 495 at exit 8 before continuing into Easton, where it intersects Route 106 before beginning a brief concurrency with Route 123 near Stonehill College. Route 138 meets the western terminus of Route 139 at the beginning of an extremely short concurrency with Route 27 in downtown Stoughton, before crossing into Canton and meeting Interstate 93/U.S. 1 at exit 2 (Exit 2A is for Route 138 south, while 2B is for Route 138 North). The route finally enters Milton, travels by Curry College and the Neponset Valley Parkway, and terminates at Route 28, directly before that route crosses the Neponset River and enters Boston.