The LGB bottleneck is indicative of how some people don't want Vancouver to become a properly planned functioning big city.
https://www.reddit.com/r/vancouver/comments/1mehud6/theres_a_single_car_stopped_in_the_only/
Unfortunatly, Vancouver still isn't allowed to function like a real proper big city. For several decades, so many key people, especially urban planners don't want to have a wider structural crossing to at least match what Prince George and Kamloops have. Or, to match what Kelowna has and especially don't want to have what Ft. McMurray has.
Indeed, most proper major cities by now would have had a 6-8 lane tunnel right under the park and close to the LGB. Georgia Street is already 7 lanes wide in the first few bloks closest to the park, so the potential for a 7-8 lane tunnel should be possible.
An 8 lane tunnel would be best in that the 3 & 4 lane counterflow on Georgia could easily feed into an 8 lane tunnel. Then once in the tunnel there world be 3 standard lanes each way, plus a bus lane each way.
A commuter train tunnel or an extension of the YVR-Canada Line should also run close to where the LGB is. Unfortunatly, some key people for several decades don't seem to want or understand the benefits of having a train connecting YVR with both of the regional bc-ferries terminals. That's because it could actually help to relieve transportation congestion. https://www.bcferries.com/current-conditions/TSA-SWB
It's always amazing to see what other cities around the world can do, simply because they aren't trapped within the backwards Vancouver mindset or don't have a backwater BC mentality to thwart them.
https://www.th.gov.bc.ca/atis/lgcws/index.html
This has to be one of the worlds best examples of bottleneck-chokepoint planning around.
https://www.translink.ca/schedules-and-maps/skytrain A rail rapid transit connection to both ferry terminals and YVR would be a huge improvement, but it's still not likely in the foreseeable future.