Take Rte. 93 to Exit 45 (River Road Exit), head east on Andover St. toward Lawrence. Metro will be at the intersection of Andover St. and Rte. 28 (Broadway).
Take Rte. 495 to Rte. 28 (Lawrence/Andover Exit), follow signs to Rte. 28 (Broadway) bear left at fork in road, go straight to stop sign take a right onto Rte. 28 (Broadway). Metro will be at the second set of lights on your left (corner of Broadway and Andover Street).