
The
Massachusetts Bay Transportation Authority (MBTA) operates two specially designated
crosstown bus routes in the
Boston, Massachusetts, United States area, called CT2 and CT3, and intended as
limited-stop buses connecting major points. The two weekday-only routes largely parallel
MBTA bus
The Massachusetts Bay Transportation Authority (MBTA) operates List of MBTA bus routes, 170 bus routes in the Greater Boston area. The MBTA has a policy objective to provide transit service within walking distance (defined as ) for all residents ...
local routes, but with fewer stops to reduce travel times.
Three crosstown routes – CT1, CT2, and CT3 – were introduced in 1994.
Eight additional routes numbered CT4 through CT11 were proposed as part of an interim phase of the
Urban Ring Project to provide circumferential service bypassing the crowded downtown subway stations, but were never put in service. Route CT1 was merged with route in 2019.
CT1

The CT1 Central Square, Cambridge–B.U. Medical Center/Boston Medical Center via M.I.T. (internally coded 701) ran between
Central Square in
Cambridge and the
B.U. Medical Center/
Boston Medical Center, mostly along
Massachusetts Avenue Massachusetts Avenue may refer to:
* Massachusetts Avenue (metropolitan Boston), Massachusetts
** Massachusetts Avenue (MBTA Orange Line station), a subway station on the MBTA Orange Line
** Massachusetts Avenue (MBTA Silver Line station), a stati ...
. The majority of its route was a limited-stop version of route . Transfers to the 1 were possible at most of the stops. CT1 service was not substantially modified since its 1994 inception.
Route CT1 was merged into route 1 in September 2019 to provide more frequent service and more consistent headways.
Station listing
CT2
The CT2 Sullivan Square station–Ruggles station (internally coded 747) connects
Sullivan Square in
Charlestown with
Ruggles in
Roxbury Roxbury may refer to:
Places
;Canada
* Roxbury, Nova Scotia
* Roxbury, Prince Edward Island
;United States
* Roxbury, Connecticut
* Roxbury, Kansas
* Roxbury, Maine
* Roxbury, Boston, a municipality that was later integrated into the city of Bosto ...
via
Kendall Square in
Cambridge. The southern part of the route roughly parallels the . The route was created as a Ruggles–Kendall route in September 1994. In September 2000, the route was extended to Sullivan via Union Square.
, the route has 25-minute headways on weekday morning peaks, 40-minute headways on weekday afternoon peaks, and 60-minute headways middays. It does not have evening or weekend service.
In May 2022, the MBTA released a draft plan for a systemwide network redesign. The draft called for route CT2 to be discontinued. Portions of the route would be covered by extensions of routes and with higher frequency.
Station listing
CT3

The CT3 Beth Israel Deaconess Hospital–Andrew Station (internally coded 708) connects the
Longwood Medical Area to
Andrew Square and runs entirely within the city of Boston. The route roughly parallels the .
The CT3 route started as Beth Israel–Andrew, but it was extended to
Logan Airport in December 1998. The extension (internally coded 709) was dropped due to low ridership in March 2002. A few early morning trips were kept as the , running from to Logan.
In January 2005, some rush hour service was rerouted to serve
Newmarket Square.
, the route has 20–22 minute headways at peak hours, 30-minute headways in the early afternoon, and 80-minute headways midday. It does not have evening or weekend service.
The May 2022 draft network plan called for route CT3 to be discontinued. It would be largely replaced by a new – route running via Huntington Avenue, Ruggles station, Andrew station, and D Street.
Station listing
See also
*
List of MBTA bus routes
*
List of key MBTA bus routes
Key bus routes of the Massachusetts Bay Transportation Authority (MBTA) system are 15 routes that have high ridership and higher frequency standards than other bus lines, according to the 2004 MBTA Service Policy. Together, they account for roughl ...
References
External links
CT2 schedule and mapCT3 schedule and map
{{MBTA
MBTA bus routes
MBTA
The Massachusetts Bay Transportation Authority (abbreviated MBTA and known colloquially as "the T") is the public agency responsible for operating most public transportation services in Greater Boston, Massachusetts. The MBTA transit network in ...