 NY 380 continued to run along the Bear Lake Outlet to a junction known as Kelly Corners southeast of Bear Lake. At this point, NY 380 turned westward and crossed over the outlet on its way to a more isolated area of the town. It intersected CR 37 before curving back to the north and passing through the town of Portland on its way into the village of Brocton. Here, NY 380 overlapped with US 20 for about 0.25 miles (0.40 km) before exiting the village. NY 380 crossed over the New York State Thruway (Interstate 90) just before it came to an end at an intersection with NY 5 on the southern shore of Lake Erie. Lake Erie State Park is about a few hundred feet up the road on NY 5 eastbound.
