CAPTION: "Two decades before he designed his famed Brooklyn Bridge, John A. Roebling built this Sixth Street Bridge in 1859. Known for years as his most graceful work, it was replace in 1892 by a Theodore Cooper span. The latter in 1927 was floated downriver on the Ohio, where it still links [has since been dismantled] Coraopolis with Neville Island." (J & L Steel Corporation.) NOTES: PHOTOGRAPHER: DATE: HEADING: Pittsburgh. Bridges. #: A37. From the Collections of the Pennsylvania Department, The Carnegie Library of Pittsburgh.