State Highway 79 Bridge at the Red River

{{Use mdy dates|date=August 2023}}

{{Infobox NRHP

| name = State Highway 79 Bridge at the Red River

| nrhp_type =

| image = State Highway 79 Bridge at the Red River.jpg

| caption = State Highway 79 Bridge

| location = Between Texas State Highway 79 and Oklahoma State Highway 79 over Red River

| nearest_city = Byers, Texas,
Waurika, Oklahoma

| coordinates = {{coord|34|7|56|N|98|5|39|W|display=inline,title}}

| locmapin = Oklahoma#Texas#USA

| label_position = top

| map_label = State Highway 79 Bridge at the Red River

| locmap_relief = yes

| built = {{Start date|1939}}

| builder = Multiple

| architecture = Camelback pony truss

| demolished = 2018{{Cite news| author = |title = Highway 79 Bridge Work at Red River |url = https://www.timesrecordnews.com/picture-gallery/news/local/2018/07/12/highway-79-bridge-work-at-red-river/36825625/ |work = Times Record News |date = July 13, 2018 |accessdate = June 23, 2021}}

| added = December 20, 1996

| area = {{convert|1.5|acre}}

| mpsub = [https://atlas.thc.state.tx.us/AdvancedSearch/MPS?mpsid=42 Historic Bridges of Texas MPS]

| refnum = 96001518{{NRISref|version=2013a}}

}}

The State Highway 79 Bridge at the Red River was a bridge carrying Texas State Highway 79 and Oklahoma State Highway 79 over the Red River at the Texas-Oklahoma state line. The camelback pony truss bridge was {{convert|2255|ft}} long and had 21 truss spans. The Texas and Oklahoma highway departments built the bridge as a combined project in 1939. The bridge provided a direct route between Waurika, Oklahoma and Byers and Wichita Falls in Texas. The bridge was the only camelback pony truss bridge remaining on a Texas state highway and the fourth-longest truss bridge in the Texas state highway system prior to being demolished.{{cite web|title=Bridge at the Red River, State Highway 79|url=http://atlas.thc.state.tx.us/viewform.asp?atlas_num=2096001518&site_name=Bridge+at+the+Red+River,+State+Highway+79&class=2002|publisher=Texas Historical Commission|accessdate=March 27, 2014}}

The bridge was added to the National Register of Historic Places on December 20, 1996.

In 2018, a new bridge was built at the location of the old bridge before the old bridge was demolished.