Must a Bicyclist Riding on a Sidewalk Stop at a Stop Sign?
According to the state's site about bicycles, there are only laws against riding on sidewalks for certain locales. Otherwise, similar to most states, you are governed as a pedestrian when riding on the sidewalk. That means if you dart in front of traffic unexpectedly, even in a crosswalk, you can still be at fault.

However, you should ALWAYS stop at an intersection, regardless of whether you are a pedestrian or a vehicle. It's polite and it's a heck of a lot safer than assuming the coast is clear. And don't be that guy who rides on sidewalks just to avoid traffic laws and stop signs, nobody likes that.