The Pennsylvania truss bridge, a variation of the Pratt truss design, has been a significant part of engineering history, particularly in the United States. These bridges were widely used during the late 19th and early 20th centuries due to their efficiency and cost-effectiveness. However, like any

The Baltimore Pratt Truss bridge is a variation of the standard Pratt truss, designed with additional bracing in the lower section to enhance its load-bearing capacity. This design makes it particularly suitable for rail bridges and other heavy-load applications. In this article, we will explore ho