19th Street Bridge, Truss bridge in Denver, United States

The 19th Street Bridge is a two-span through Pratt truss bridge over the South Platte River in Denver, about 200 feet (61 m) long with a roadway roughly 22.5 feet (6.9 m) wide. Its pin-connected wrought iron members include horizontal top chords and unusually deep I-beam upper struts. Sidewalks with iron newels and latticework cantilever from both sides, and the latticed portals carry cast iron crests, finials and a builder's plaque.

Completed in 1888 by the Missouri Valley Bridge & Iron Company, the structure replaced a wooden predecessor that had been damaged by flood waters. It remains one of Colorado's oldest wrought iron bridges still standing in its original location.

The structure displays the construction techniques typical of the late 1800s, with cast iron decorations along its railings that reflect the design choices of that era. Local residents and visitors recognize these details as examples of how bridges were built and decorated during that period.

The bridge is now reserved exclusively for pedestrian use and connects to walking trails that run along the riverbank. The crossing is relatively brief, making it a natural stopping point within a longer walk along the water.

Since 2011 the bridge has hosted the annual "Gala on the Bridge", a fundraiser for The Greenway Foundation. The Denver Post called it the first time the structure was used for anything other than crossing the South Platte River.