State Highway 173 or SH 173 is a state highway that runs from Kerrville to Jourdanton in south Texas. The highway was originally designated by 1933 from Hondo southeast to Jourdanton. By 1939, the designated route was extended south from Jourdanton through Freer, absorbing State Highway 241, with an expected terminus at Hebbronville. By 1942, the section from Freer to Hebbronville had been cancelled. In 1965, the section south of Jourdanton was transferred to SH 16

State Highway 16 (Texas)

State Highway 16, or SH 16, is a north–south state highway that runs from U.S. Highway 281 24 miles south of Wichita Falls to Zapata on the Texas-Mexico boundary...

. In 1990, the route was extended northward to Kerrville, replacing RM 689.

Counties and junctions

County	Location	Junction	Notes
Kerr Kerr County, Texas Kerr County is a county located on the Edwards Plateau in the U.S. state of Texas. In 2010, its population was 49,625. Its county seat is Kerrville. Kerr County was named by Joshua D. Brown for his fellow Kentucky native, James Kerr, a congressman of the Republic of Texas...	Kerrville Kerrville, Texas Kerrville is a city in Kerr County, Texas, United States. The population was 20,425 at the 2000 census. In 2009, the population was 22,826...
	Camp Verde
Bandera Bandera County, Texas Bandera County, formed in 1856 from Bexar and Uvalde counties, is a county located on the Edwards Plateau in the U.S. state of Texas. As of 2000, the population is 17,645. Its county seat is Bandera. Bandera is named for the Spanish word for flag...
	Bandera Bandera, Texas Bandera is the county seat of Bandera County, Texas, United States,in the Texas Hill Country, which is part of the Edwards Plateau. The population was 957 at the 2000 census, and according to a 2009 estimate, the population had jumped up to 1,216 people...		North end of SH 16 overlap
		– San Antonio	South end of SH 16 overlap
		– Hill Country SNA
Medina	Hondo Hondo, Texas Hondo is a city in and the county seat of Medina County, Texas, United States. According to the 2000 Census, the population was 7,897...	, San Antonio	Interchange
	Devine Devine, Texas Devine is a city in Medina County, Texas, United States. The population was 4,140 at the 2000 census. It is part of the San Antonio Metropolitan Statistical Area.-Geography:Devine is located at ....
		, San Antonio
Frio
Atascosa
	Jourdanton Jourdanton, Texas Jourdanton is a city in and the county seat of Atascosa County, Texas, United States. The population was 3,732 at the 2000 census. It is part of the San Antonio Metropolitan Statistical Area.-History:...