University Bridge (Seattle)

 https://en.wikipedia.org/wiki/University_Bridge_(Seattle) 

https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/University_Bridge_from_Ship_Canal_Bridge_-_01.jpg/960px-University_Bridge_from_Ship_Canal_Bridge_-_01.jpg

https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Seattle_-_University_Bridge_and_U_District%2C_1963_%2849561206388%29.jpg/960px-Seattle_-_University_Bridge_and_U_District%2C_1963_%2849561206388%29.jpg

The University Bridge and the Burrard+Street+Bridge used to have 6 lanes, but 2 lanes were removed for bikes. In both cases, a bike bridge should have been built next to them. Then, they both could still have 6 lanes.