 In Rockland, the route shares a half-mile concurrency with Route 139 before turning northward, then eastward into the town of Hanover.In Hanover, the route crosses through the northern part of town, crossing Route 3 without junction before meeting Route 53 at the village of Assinippi, which provides access between Route 3 and Route 123 at exit 13.Shortly after the intersection, and just south of Jacobs Pond, the route enters Norwell as Main Street, traveling through the town's Historic District and village center.