https://dailyhive.com/vancouver/second-narrows-rail-bridge-malfunction
The tunnel should have been built wide enough to eventually accommodate 2 tracks. Either there should have been a provision to build a 2nd fright bridge and tunnel, or simply have designed a double track bridge and tunnel that could easily and regularly be maintained.
This all symbolically fits in with with the narrow-minded mentality to not build proper big city infrastructure.
