Complex sentence: Route 85's southern terminus is at the Route 16/Route 109 multiplex in Milford north to Route 117 in Bolton, passing through Hopkinton, Southborough, Marlborough and Hudson.
Split into simpler sentences: Route 85's southern terminus is at the Route 16/Route 109 multiplex in Milford. It runs north to Route 117 in Bolton, passing, in order, through Hopkinton, Southborough, Marlborough, and Hudson.