The Penn Central Railroad Bridge is a bridge that spans the Little Calumet River. It is located in Chicago 14 miles from the entrance of the Calumet Harbor. It is between the Illinois Central Railroad Bridge and the Halsted Street traffic bridge. It is currently operated as an industrial spur by the CSX Railroad. It is a Warren through truss with deck plate approaches. A cantilevered walk has been added to the structure. Its largest span is 272 feet. The total length is 337 feet.