https://dailyhive.com/vancouver/ironworkers-memorial-bridge-lane-closures
Even from a late 1950s backwards BC perspective, there should have been at least 2 wide emergency lanes. 4 emergency lanes would have been even better, because in addition to 3 general lanes each way, a provision for 2 bus & HOV lanes would have been great. There also should have been a provision for a lower truck & train deck.
Of course any replacement bridge should not only provide 3 general lanes each way, but also 1 truck & 1 HOV lane each way. Then another section or level for at least 2 train tracks & 2 express bus lanes. Since BC doesn't like to provide 24hr train service, there must be 2 bus lanes always open, especially whenever the rail component is closed for maintenance or some emergency.
Unfortunatly, BC Bottleneck planning waters things down. Vancouver, Victoria & Kelowna like to excel in such congestive planning.
https://jfdatalinks.blogspot.com/search?q=The+Ironworkers-Bridge
