Once Route 6/Route 138 enter Fall River, Route 138 splits off and US 6 follows two halves as Davol Street on either side of Route 79 before turning east as two-lane President Avenue, following up the Seven Hills to the Highlands neighborhood. At the end of President Avenue the road turns southward at a rotary (which also provides access to Route 24) onto four-lane Eastern Avenue. The road has another interchange with I-195 one last time before turning eastward along Martine Street onto the "Narrows", the thin strip of land between the Watuppa Ponds that also carries the interstate between Fall River and Westport. Once over the Narrows, the road turns southeast, traveling through the town. I-195 can be accessed from Route 6 in Westport via Route 88, which intersects with Route 6 shortly before meeting its northern terminus at the Interstate. At the Dartmouth line, the road serves as the eastern terminus of Route 177. After passing through the Dartmouth retail area and two roads (Reed Road and Faunce Corner Road) that provide access to I-195, the route passes into the city of New Bedford.
