https://vancouver.citynews.ca/2024/09/28/north-vancouver-lane-realignment-iron-workers-bridge/
Unfortunatly, the Iron Bridge wasn't designed with future capacity in mind. No emergency lanes, no bus-lanes and no provision for rail rapid transit.
https://www.cbc.ca/news/canada/british-columbia/north-vancouver-lane-change-1.7336664
https://jfdatalinks.blogspot.com/search?q=The+Ironworkers-Bridge