Click here for the "Lowell Line" Commuter Rail Schedule. http://www.mbta.com/schedules_and_maps/rail/lines/?route=LOWELL

The Downtown Circulator bus runs to and from the Kennedy Bus Center at the Gallagher Terminal Transportation Center. Get off at the Merrimack and John Street stop and walk two blocks down John Street to Boarding House Park.

By Car:

From Route 495

Take Exit 35c to the Lowell Connector.
Follow the Lowell Connector to its end.
Turn left onto Gorham street and continue on Central street.
Turn left onto Merrimack street.
Take an immediate right onto John street.
Go two blocks to the John Street Parking Garage on the right.
Walk across French street to the park 

From Route 3