Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Route 31 is a state highway in the US State of Massachusetts.It begins at the Connecticut border in Dudley, where a short (less than 50 yards (46 m) long) unnumbered local road changes to MA-31. Through Dudley and Charlton, it is known as Dresser Hill Road. Dresser Hill road winds over Dresser Hill, with several moderately steep grades and some tight corners.In Charlton, it intersects U.S. Route 20 a few miles east of the US-20/Massachusetts Turnpike & I-84 interchange. This provides its only connection with an interstate highway. In Charlton, it is known as Masonic Home Road and Brookfield Road. It then passes Lambs Pond.