AMP: 81 Location: I-495 and Great Rd, Westford Just after Mass. 119, we’ll enter Westford. AMP: 81 Location: I-495 and Great Rd, Westford Reassurance shield after the MA 119 interchange. AMP: 82 Location: I-495 and Boston Rd, Westford I-495 will pass over Mass. 225 without interchange, but you can get to it from Boston Rd … Continue reading Interstate 495, MA 119 to MA 4