Sounds like things there much like here
For communities that don't have shuttle services, if they are on a Greyhound (longhaul Canadian regular buses) bus route, they can catch that. But I have never seen a wheelchair accessible Greyhound bus. Some might exist, but I would have to find out and verify.
(actually, I think Greyhoud travels in the United States too, but also would have to check and verify. I've only ever travelled in canada on it)