In 1935, a new bridge over the Cape Cod Canal, the Bourne Bridge, was opened to traffic, replacing an earlier drawbridge at the same location. Between 1941 and 1943, the road south of the Bourne Bridge was widened to a four-lane, divided highway to the Pocasset Rotary and renamed General MacArthur Boulevard. The Route 28 expressway in Falmouth opened to traffic in 1961. Route 28 was relocated to the new expressway soon after, with the former surface alignment being renumbered to Route 28A.