Fourth Bridge
| Name | Pennsylvania Railroad "Iron" Bridge |
| Started | April 16, 1897 |
| Opened | June 7, 1897 |
| Until | March 13, 1958 |
| Cause | Dismantled for Scrap 1963 - November 1964 |
| Cost | |
| Builder(s) | Pennsylvania Railroad |
| Material | Stone and Prefabricated Steel |
| # of Piers | 27 (Same Piers as Previous Bridge - Remain) |
| Capacity | Railway and Twin Carriageways (Shared w/ Pedestrians) |
| Tolls | Automobile - 20¢ Passenger - 4¢ Pedestrian - 3¢ |