http://www.mbta.com/uploadedfiles/Documents/Schedules_and_Maps/Upcoming_Schedules/Commuter_Rail/Fitchburg.pdf
Fitchburg Line
Weekend Suspension of Service
Because of track improvement projects, service between North Station
and Fitchburg is suspended on Saturdays and Sundays from Saturday,
July 12, 2014 through Sunday, November 23, 2014.
No substitute bussing is provided.
Exception:
Full weekend service will be provided on Labor Day weekend, Saturday
August 30, 2014, Sunday, August 31, 2014 and Monday, September 1, 2014.
Sunday Nov 23, 2014
12:00 AM - 11:59 PM EST