Called Portland Street at its western end, the route starts at Alderney Drive (Trunk 7) across from the city hall of the former city of Dartmouth. There it proceeds where it intersects with Prince Albert Road (Trunk 7), Alderney Drive and Canal Street.
The road is designated as Portland Street at its western endpoint, beginning at Alderney Drive (Trunk 7) adjacent to the city hall of the former town of Dartmouth. It then intersects with Prince Albert Road (Trunk 7), Alderney Drive, and Canal Street.