It formerly shared a 28 kilometers alignment with Highway 99A from the Stanley Park Causeway and the West End and Downtown Vancouver all the way to 98 Avenue in Surrey via West Georgia Street, Seymour Street, Main Street, Kingsway, 10th Avenue, McBride Boulevard, the Pattullo Bridge and King George Boulevard (formerly known as and still colloquially called the King George Highway) at which point Highway 1A diverged east.