[analog31]

I get around a lot by bike. Riding bikes on sidewalks is dangerous. You're not visible to cars when you're crossing driveways or going through intersections. Likewise, mixing with pedestrians is pretty unpleasant for everybody. You won't make a lot of friends that way. Sidewalks are safe when you're moving at the speed of walking.

When I'm on a sidewalk with my bike and there are pedestrians around, I hop off and walk.

My city has some master plan for bike infra, but really it's a matter of waiting until a road or intersection has to be rebuilt (frequently due to hard winters) and thinking about bike traffic at that point. There's also a network of sleepy neighborhood streets that are used by cyclists including myself.