It covers a total of 6.478 miles (10.425 km), entirely within the city limits of Texarkana.

SH 93 includes the portion of Summerhill Road south of Interstate 30.

It crosses New Boston Road, Martin Luther King Boulevard (westbound U.S. Highway 67), and 7th Street (eastbound US 67), after which it becomes Lake Drive.

From there it forms a curve to the southwest and west, finally ending at Loop 151, and feeding into Interstate 369/U.S.

The original SH 93 was designated on January 21, 1924, as the route from Gatesville to the "state reformatory school", which was the state juvenile training and rehabilitation school for boys, a few miles north.