Sullivan Square Station – Central Square, Cambridge
Bus · Route 91
Central Square ↔ Sullivan
Stops, live buses and next arrivals
- River St @ Green St29 minthen 11:36 PM
- Prospect St @ Bishop Allen Dr30 minthen 11:37 PM
- Prospect St @ Harvard St30 minthen 11:37 PM
- Prospect St @ Broadway31 minthen 11:38 PM
- Prospect St @ Gardner Rd31 minthen 11:38 PM
- Prospect St @ Cambridge St32 minthen 11:39 PM
- Prospect St @ Webster Ave34 minthen 11:41 PM
- Prospect St @ Union Sq - Green Line35 minthen 11:42 PM
- Washington St @ Rossmore St36 minthen 11:43 PM
- Washington St @ New Washington St37 minthen 11:44 PM
- Washington St opp Myrtle St38 minthen 11:45 PM
- Washington St @ Inner Belt Rd39 minthen 11:46 PM
- Cambridge St @ Carter St39 minthen 11:46 PM
- Sullivan SquareNo more buses
- Sullivan Square4 minthen 52 min
- Cambridge St @ Brighton St5 minthen 53 min
- Washington St @ Mt Vernon St5 minthen 53 min
- Washington St @ Myrtle St - Cobble Hill Apt6 minthen 54 min
- Washington St @ Tufts St6 minthen 54 min
- Washington St @ McGrath Hwy7 minthen 55 min
- Washington St @ Boston St7 minthen 55 min
- Somerville Ave @ Union Sq8 minthen 56 min
- 25 Webster Ave @ Newton St9 minthen 57 min
- Prospect St @ Oak St10 minthen 58 min
- Prospect St @ Cambridge St12 minthen 11:26 PM
- Prospect St @ St Mary Rd14 minthen 11:28 PM
- Prospect St @ Broadway15 minthen 11:29 PM
- Prospect St @ Harvard St16 minthen 11:30 PM
- Prospect St @ Bishop Allen Dr17 minthen 11:31 PM
- Western Ave @ Green St18 minthen 11:32 PM
- River St @ Green StNo more buses
Timetable
Scheduled departures for any day MBTA has published. For live arrivals, use the diagram above.
Sunday schedule Sun, Nov 1
Still to come from last night's schedule:
On-time performance
How much of the time buses ran early, on time or late, hour by hour.
84% on time today
from 197 vehicle-minutes
- On time
- Late (over 5 min)
- Early (over 1 min)
- Fewer than 30 vehicle-minutes
Hour-by-hour numbers
| Hour | On time | Late | Early | Vehicle-minutes | Previous 0 days, on time |
|---|---|---|---|---|---|
| 6 PM | 75% | 0% | 25% | 16 (Fewer than 30 vehicle-minutes) | – |
| 7 PM | 74% | 0% | 26% | 50 | – |
| 8 PM | 96% | 0% | 4% | 53 | – |
| 9 PM | 77% | 4% | 20% | 56 | – |
| 10 PM | 100% | 0% | 0% | 22 (Fewer than 30 vehicle-minutes) | – |
Connections
Rail lines and bus routes you can transfer to from route 91.
Rail
Bus
- 85Assembly Row – Ruggles StationAt Sullivan Square and 16 more stops
- 109Linden Square – Harvard Square via SullivanAt Sullivan Square and 12 more stops
- 83Rindge Avenue – Central Square, CambridgeAt River St @ Green St and 6 more stops
- Green Line ShuttleUnion Square – North StationAt Sullivan Square and 5 more stops
- 64Oak Square – Kendall/Mit StationAt River St @ Green St and 4 more stops
- 47Central Square, Cambridge – Broadway StationAt River St @ Green St and 1 more stops
- 70Market Place Drive or Waltham Center – University ParkAt River St @ Green St and 1 more stops
- 90Davis Station – Assembly RowAt Sullivan Square and 1 more stops
- 89Clarendon Hill or Davis Station – Sullivan Square StationAt Sullivan Square
- 89/93Clarendon Hill – Haymarket StationAt Sullivan Square
And 12 more routes at stops along the way. 92Sullivan Square Station – Downtown via Main Street93Sullivan Square Station – Downtown via Bunker Hill Street95West Medford or Arlington Center – Sullivan Square Station101Malden Center Station – Sullivan Square Station via Winter Hill105Malden Center Station – Sullivan Square Station via Newland Street HousingOrange Line ShuttleSullivan Square – State80Arlington Center – Lechmere Station88Clarendon Hill – Lechmere StationGreen Line E ShuttleMedford/Tufts – North Station68Harvard Square – Kendall/Mit Station69Harvard Square – Lechmere Station87Arlington Center – Lechmere Station
About route 91
Route 91 (Sullivan Square Station – Central Square, Cambridge) is a MBTA bus route with 14 stops between River St @ Green St and Sullivan.
Times with the live mark come from each bus's GPS and MBTA's real-time predictions. Times marked "Not tracked" are scheduled trips with no bus reporting. All other times are from MBTA's published schedule (feed Fall 2026, 2026-10-30T17:51:33+00:00, version D).
How often does route 91 run?
Every 45 min for most of the day on weekdays, based on the published schedule.
When does route 91 start and stop?
The first bus leaves around 6:45 AM and the last arrives around 1:14 AM.
Where does route 91 connect with Subway or Commuter Rail?
At Sullivan Square (Orange Line).
What are timepoints?
Timepoints are stops where the bus is scheduled to wait if it's running early; times at the stops between them are estimates. On long routes, the diagram shows timepoints, transfer stops and stops with a bus nearby, and groups the stops in between.