South Tenth Street Bridge, most often called the Tenth Street Bridge, but officially dubbed the Philip Murray Bridge, is a suspension bridge spanning the Monongahela River in Downtown Pittsburgh, Pennsylvania. It is the only cable suspension bridge in Allegheny County and its 725-foot (221 m) main span is the longest span on the Monongahela River. The bridge was renamed on Labor Day 2007 for Philip Murray, the first president of the United Steelworkers of America.