Quote Originally Posted by Kater
It looks like some kind of rail to me (Rallidae family). The feet/legs definitely look like those of a 'water bird'......
Maybe a Sora? Link: http://identify.whatbird.com/obj/508/_/Sora.aspx

I'll keep looking...
I think Kater has identified the bird correctly . He/she is definitely some sort of rail at least, and rails are very shy and secretive creatures, so what he/she was doing near a road I don't know. Maybe he/she's sick or just wandered off and became scared and cold. It's probably no surprise that the bird's not moving as they are very wary of people. A vet would give him/her a check over and if the bird is OK might be able to tell you a good place to re-release it