It continues as an expressway into Acton, where the expressway ends at the traffic-light intersection with Piper Road and Taylor Road, and Route 2 becomes a regular divided highway at most points and just a four-lane highway at other points.
It continues as an expressway until it goes into Acton, where it runs into Piper Road and Taylor Road at a traffic light (Exit 44). At this point the expressway ends and Route 2 becomes a regular divided highway at most points and just a four-lane highway at other points.