Complex sentence: Most traffic approaching from the west follows Massachusetts Route 25, which ends at the interchange with US 6/Route 28 just north of the bridge, and provides freeway connections from Interstate 495 and Interstate 195.
Split into simpler sentences: Most traffic approaching from the west follows Massachusetts Route 25 which ends at the interchange with US 6 and Route 28 just north of the bridge. The highway provides freeway connections from Interstate 495 and Interstate 195.