AMP: 64 Location: School St and McAllister Rd, Winchendon Welcome to Massachusetts! Route 12 continues its four state trek in the Bay State. AMP: 64 Location: School St and McAllister Rd, Winchendon Reassurance shield as we enter Massachusetts. AMP: 64 Location: School St and McAllister Rd, Winchendon Buckle up because seat belts are required again. … Continue reading Massachusetts Route 12, NH-12/NH State Line to US-202