Massachusetts Route 12
|Maintained by MassDOT|
|Length:||64.41 mi (103.66 km)|
|Existed:||1922 – present|
|South end:||Route 12 in Dudley|
|North end:||NH 12 at Winchendon|
Route 12, starting at the Connecticut state line, runs north through the towns and cities of Dudley, Webster, Oxford, Auburn, Worcester, West Boylston, Sterling, Leominster, Fitchburg, Westminster, Ashburnham, and Winchendon.
Route 12 has a junction with Interstate 90 (the Massachusetts Turnpike) at an interchange in Auburn that also includes Interstates 290 and 395 and US 20. Route 12 has an interchange with I-290 in Worcester, and three interchanges with I-190, in Worcester, West Boylston, and Sterling. Route 12 is a minor road in Massachusetts, having been replaced by I-395 from the Connecticut state line to Auburn, I-290 from Auburn to Worcester, and I-190 from Worcester to Leominster.
The entire route is in Worcester County.
|Dudley||0.0||0.0||Route 12 south – Thompson||Northern end of Connecticut Route 12.
Southern end of Massachusetts Route 12
|1.7||2.7||Route 197||Eastern terminus of Route 197|
|Webster||3.4||5.5||Route 16 / Route 193||Western terminus of Route 16; northern terminus of Route 193|
|Oxford||11.2||18.0||Route 56||Southern terminus of Route 56|
|12.0||19.3||US 20||Beginning of concurrency with US 20|
|Auburn||12.6||20.3||US 20||End of concurrency with US 20|
|13.6||21.9||I‑395 / I‑290 / I‑90 (Mass. Pike)||I-395 / I-290 exit 7; I-90 exit 10|
|Worcester||17.6||28.3||I‑290||Exit 10 – southbound exit/northbound entrance only|
|19.1||30.7||Route 9||Beginning of concurrency with Route 9|
|20.5||33.0||Route 122 / Route 122A||Junction of Route 122; beginning of concurrency with Route 122A|
|21.2||34.1||Route 9||End of concurrency with Route 9|
|22.5||36.2||Route 122A||End of concurrency with Route 122A|
|23.1||37.2||I‑190||I-190 Exit 1|
|West Boylston||26.1||42.0||I‑190||I-190 exit 4|
|27.9||44.9||Route 140||Beginning of concurrency with Route 140|
|28.8||46.3||Route 140||End of concurrency with Route 140|
|29.0||46.7||Route 110||Western terminus of Route 110|
|Sterling||33.4||53.8||Route 62||Beginning of concurrency with Route 62|
|33.7||54.2||Route 62||End of concurrency with Route 62|
|35.2||56.6||I‑190||I-190 exit 6|
|Leominster||40.1||64.5||Route 117||Western terminus of Route 117|
|40.7||65.5||Route 13||Southern terminus of Route 13|
|41.6||66.9||Route 2||MA Route 2 exit 31A-B|
|Fitchburg||46.1||74.2||Route 2A / Route 31||Beginning of concurrency with Routes 2A and 31|
|47.0||75.6||Route 2A / Route 31||End of concurrency with Routes 2A and 31|
|Ashburnham||53.1||85.5||Route 101||0.1-mile concurrency|
|Winchendon||59.0||95.0||Route 140||Northern terminus of Route 140|
|61.4||98.8||US 202||0.2 mile concurrency|
|64.41||103.66||NH 12 north||Northern end of Massachusetts Route 12
Southern end of New Hampshire Route 12.
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi