State Highway OSR is a state highway in the U.S. state of Texas.
Along SH OSR west of Normangee near Interstate 45
The Old San Antonio Road was a historic roadway located in the U.S. states of Texas and Louisiana. Parts of it were based on traditional Native American trails. Its Texas terminus was about 35 miles (56 km) southeast of Eagle Pass at the Rio Grande in Maverick County, and its northern terminus was at Natchitoches, Louisiana. The road continued from Texas through Monclova to Mexico City.
El Camino Real monument in downtown Natchitoches, Louisiana
A typical marker placed along the route of the Old San Antonio Road in 1918.
Old San Antonio Road historical marker in Cotulla in La Salle County in south Texas