There is some precedent for the MBTA running interstate service: Rhode Island’s funding for its recent extension of the Providence line to serve T. F. Green International Airport in Warwick and Wickford Junction. Current estimates are New Hampshire might have to kick in $10 million to $12 million annually to support a Lowell line extension into the Granite State.
New Hampshire seeks MBTA Commuter Rail expansion
This is really good news. So eventually MBTA will run from Concord, NH to Westerly, MA and many points in between. That is so cool!