Salt Lake County is asking its residents to bond for money to combine two county jails into one and create a new facility aimed at getting support for low-level offenders. But one citizen group believes it won’t help the way it’s being advertised. According to the county, the $507 million bond would cost the average taxpayer about $60 per year. The money would be used to combine two jails into one: The current Salt Lake County Oxbow Jail, on 3148 S. 1100 West, would close, and beds would be added to Salt Lake County Metro Jail on 3365 S. 900 West.