 From Weymouth Landing, the tidal river marks the boundary between Braintree and Weymouth, flowing northeast for and then north for before widening considerably and turning west northwest for .At this point the river's western shore is now in Quincy at the south end of the former Fore River Shipyard.Here the river turns north northeast for as it passes through a heavily industrialized area around the former shipyard and is crossed by the Fore River Bridge, a lift bridge which carries Massachusetts Route 3A between Quincy and Weymouth.