State Highway 25, or SH 25, runs from the Red River north of Haynesville to Windthorst in north Texas. This route was designated by 1926 along a route from Mineral Wells to Oklahoma. By 1928, the route south of Jacksboro became a portion of SH 24. By 1933, the route south of Windthorst became a portion of SH 66, changing it to its current route, with a toll bridge crossing across the Red River into Oklahoma. This crossing is no longer present.