Somehow Granville was never allowed to become much more of a grand street downtown.
https://en.wikipedia.org/wiki/Granville_Street#History
https://dailyhive.com/vancouver/vancouver-then-and-now-granville-street-photos
https://heritagevancouver.org/top10-watch-list/2010/4-downtown-granville-street/
https://onthisspot.ca/cities/vancouver/granville
There should have been a wide Granville+Street+Bridge over the Fraser River, in addition to the GSB over F. Creek. Then 4 lanes of Granville+Street could be for southbound traffic and 4 lanes of Oak+Street for northbound traffic.