https://dailyhive.com/vancouver/ironworkers-memorial-bridge-lane-closures-vancouver
Unfortunatly, when this bridge was designed, there was no serious consideration to have 2 wide emergency lanes and 2 wide shoulders. Then, the Iron Bridge could have gradually been adapted to accommodate 2 bus lanes and 2 HOV lanes. At the very least, a bus, HOV and commuter train bridge should have been built next to the inadequate Iron Bridge back in the 20th century.
https://en.wikipedia.org/wiki/Ironworkers_Memorial_Second_Narrows_Crossing Opened August 25, 1960
https://en.wikipedia.org/wiki/Granville_Street_Bridge Opened February 4, 1954 https://upload.wikimedia.org/wikipedia/commons/thumb/0/0c/View_of_downtown_Vancouver_from_the_Granville_Street_Bridge.JPG/960px-View_of_downtown_Vancouver_from_the_Granville_Street_Bridge.JPG
https://en.wikipedia.org/wiki/Oak_Street_Bridge Opened June 29, 1957 https://upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Oak_Street_Bridge.jpg/960px-Oak_Street_Bridge.jpg
https://en.wikipedia.org/wiki/Knight_Street_Bridge Opened January 15, 1974 https://upload.wikimedia.org/wikipedia/commons/f/f0/Knight_Street_Bridge.jpg
https://en.wikipedia.org/wiki/Arthur_Laing_Bridge Opened 27 August 1975
https://evelazarus.com/third-crossing-here-we-go-again Somehow, Vancouver just never got around to building a bus and train tunnel or bridge in between the Lion Bridge and the Iron Bridge. Since Skytrain doesn't run 24 hours, there needs to be 24 hour bus lanes.
https://www.pc.gc.ca/apps/dfhd/page_nhs_eng.aspx?id=11273 Some day, the Lion Bridge could become a nice bus and bike bridge, if a highway tunnel could ever be built under the park and beside the LGB.
Unfortunately, the Vancouver Mind Virus (VMV) keeps getting in the way of progress. Just look at how short the Canada Line trains are.