Designated in 1986 as an access route to the Texas Research Park, the route was composed of two disconnected sections—a southern segment from US 90 to Farm to Market Road 1957 (FM 1957) and a northern segment from FM 471 to SH 16—before the gap was closed in 2022.

The route travels to the north as a two-lane highway and is known as either the Texas Research Parkway or the Hill Country Parkway, providing access to the Texas Research Park and a Citi service center.

[citation needed] The northern segment of the roadway includes a design to provide protection to the Edwards Aquifer, the drinking water supply of San Antonio.

On November 29, 1988, the designation was extended northeastward from SH 16 to FM 3351; however, this segment was never constructed.

[19] Relocation assistance was provided to landowners to persuade them to sell their property for the project.

[18] The findings for the environmental impact study were released by July 2017, and construction broke ground in late 2020.