We have a very busy avenue that has a bike lane. Except that the lane disappears for long stretches where things are congested. IOW, where you actually need a lane, there isn't one. My favorite spot is in front of a hospital. They nicely included a turn lane, pushing traffic towards the edge of the road where a cyclist would be.
Did I mention that traffic on this road often goes 40? But at least after you get run over the hospital is close by. Not that it's likely to do you any good.
I call it the Valley of Death and avoid it.