More than likely the roads were traced from satellite/aerial imagery and there's no source for road names. If you're in that area you might want to use the Edit

More than likely the roads were traced from satellite/aerial imagery and there's no source for road names. If you're in that area you might want to use the Edit button to add the road names (it's really really easy now). If you don't want to sign up for an account, you can use the "Add Note" feature in the lower right and do it anonymously.