https://dailyhive.com/vancouver/pattullo-bridge-full-closure-long-weekend
Backwards BC has always had a problem with proper planning for future infrastructure capacity. In the 1930s, NW was the remnant of a small backwater provincial capital. In the late 1800s or the early 1900s, NW could have absorbed what is today known as the Tri-Cities. There could have been better cooperation with Surrey to become a proper river metropolis region.
Unfortunatly, in the 1930s it was still amazing just to have plumbing & electricity in Surrey. So to have a Pattullo-Bridge (PB) with 4 wagon roads on it, was also amazing. Apparently, there was only enough funds to have one sidewalk. The PB should have been on a similar scale as the Burrard_St._Bridge, with 6 lanes & 2 sidewalks & even a provision for a lower tram-train deck. But in backwards BC such forward planning is difficult.
Of course the Burrard+Street+Bridge was reduced to 4 lanes and the replacement of the 4 lane Pattullo+Bridge will only open with 4 lanes. Of course there is no provision for a rail transit line on it.
https://jfdatalinks.blogspot.com/search?q=the+BC+inter-urban+railway