Utah does have a blanket law for riding on sidewalks or pedestrian pathways, though it is not expressed deliberately.
The only exceptions to a person riding on the sidewalk is if the road does not have approved bicycle lanes, or the person is in a group with special permits, or the road is physically unfit for travel. As of the last 4 years, every paved road, with the exceptions of interstates, were approved for bicycle travel, even if they do not have designated bicycle lanes.
Granted, one may argue that any road is unfit for bicycle travel if the speed limit is 55 MPH or so, but you must prove in court how the entire road is unfit, which requires just as much effort as the DOT requires to gain permission to re-pave the surface from a graded dirt base.
The only exceptions to a person riding on the sidewalk is if the road does not have approved bicycle lanes, or the person is in a group with special permits, or the road is physically unfit for travel. As of the last 4 years, every paved road, with the exceptions of interstates, were approved for bicycle travel, even if they do not have designated bicycle lanes.
http://www.rules.utah.gov/publicat/code/r805/r805-001.htm
Granted, one may argue that any road is unfit for bicycle travel if the speed limit is 55 MPH or so, but you must prove in court how the entire road is unfit, which requires just as much effort as the DOT requires to gain permission to re-pave the surface from a graded dirt base.