The Northwest Arm Drive is a 4-lane divided highway that runs entirely in Halifax in the Halifax Regional Municipality connecting Nova Scotia Highway 102 in Clayton Park to Nova Scotia Route 306 (Old Sambro Rd) in Spryfield. The highway is a stub of the incomplete "Harbour Drive" project which would have connected Nova Scotia Highway 102 with the Halifax waterfront, via a bridge over the Northwest Arm and a 6-lane highway through the south end along Water Street and along Barrington past Cogswell.