Bridge Week!: Steel Railroad Bridge

Photo Credit: Alex Mead

This is a classic example of a steel railroad bridge. This bridge is constructed of built up members of steel and is simply supported. Look closely on the left side of the span and an actual hinge can be seen. This hinge allows the span to rotate freely, but will inhibit any vertical and translational motion. Simply supported beams allow for a simplified analysis as well as very predictable behavior under loading conditions.