https://viewpointvancouver.ca/2017/09/28/twinning-the-lions-gate-bridge/
No twinning the Lions Gate Bridge, but what about tunneling?
https://dailyhive.com/vancouver/north-shore-rapid-transit-study-skytrain
A 6 lane highway and a 3 track train tunnel+deep+under+Stanley+Park is possible, but still unlikely for the foreseeable future.