Came across a 1963 Study with 6 Bridge options for the Harbour and North West Arm:
What eventually became the MacKay......
A 'Twined' MacDonald.....
Cogswell/Cornwallis St to Portland St.......
Robie/Oakland Rd - Georges Island – Woodside (Double Suspension).....
Oakland Rd to Purcells Cove Rd
Robie St to Purcells Cove Rd