U.S. Route 57 in Texas

US Highway 57
Route information
Maintained by TxDOT
Length:	98.10 mi (157.87 km)
Existed:	1970 – present
Major junctions
South end:	Fed. 57 at Piedras Negras, Mexico
	US 277 in Eagle Pass US 83 in La Pryor
North end:	I-35 near Moore
Highway system
United States Numbered Highway System List Special Divided Replaced Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec ← SH 56 SH 57 → ← SH 75A SH 76 US 77 →

U.S. Highway 57 (US 57) is a 98.095-mile (157.869 km) north–south United States highway that follows a nearly east–west route in the southwestern part of the U.S. state of Texas. The highway's northern (eastern) terminus is about 50 miles (80 km) south of San Antonio, Texas, between Devine and Pearsall, at an intersection with Interstate 35 (I-35; old U.S. Highway 81). Its southern (western) terminus is in Eagle Pass, at the Rio Grande (Río Bravo), where it continues into Piedras Negras, Coahuila, as Mexican Federal Highway 57.

This 98-mile (158 km) highway was originally designated by 1933 as Texas State Highway 76, which was previously designated in 1926 on a route from Nacogdoches to Joaquin which was replaced by SH 7 in 1933. From 1942 to 1964, its eastern half was reassigned to Farm to Market Road 394 (FM 394). In 1966, the state changed the highway's number to 57 to provide continuity with Mexican Federal Highway 57, a similarly-numbered route across the Mexican border.

In 1970, the highway was commissioned as a United States Highway, and retained its "57" designation to prevent confusion. The highway is signed south–north, even though it travels much closer to a west–east direction. However, Mexican Federal Highway 57 travels south to Mexico City, so the unusual directional signing again prevents confusion.

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Wikipedia