State Highway 79 Bridge at the Red River, Demolished truss bridge site over the Red River at the Oklahoma–Texas line, United States

The State Highway 79 Bridge is a road crossing over the Red River connecting Oklahoma and Texas, featuring a distinctive truss structure with multiple spans. The structure is designed with multiple arched segments that create its recognizable appearance.

The structure was constructed in the late 1930s as a joint effort between the transportation authorities of Texas and Oklahoma to improve regional connectivity. It later earned recognition as a historic site due to its significance as an engineering achievement of that era.

The bridge served as the main crossing point linking communities on either side of the river and shaped the landscape for generations of residents. People relied on it to travel between neighboring regions and conduct daily business across the state border.

The 1939 bridge no longer exists: it was demolished after a replacement span opened at the same location in 2018. Visitors today cross the Red River on the new bridge carrying Texas and Oklahoma State Highway 79 between Waurika, Oklahoma, and Byers and Wichita Falls, Texas. Nothing of the camelback pony truss remains to walk on.

Before demolition, it was the only camelback pony truss bridge left on a Texas state highway and the fourth-longest truss bridge in the Texas state highway system. The 2,255-foot structure had 21 truss spans. It was listed on the National Register of Historic Places on December 20, 1996, and was replaced by a new bridge in 2018.