U.S. Route 181
U.S. Route 181 | |
|---|---|
US 181 highlighted in red | |
| Route information | |
| Auxiliary route of US 81 | |
| Length | 136.76 mi (220.09 km) |
| Existed | 1927–present |
| Major junctions | |
| South end | I-37 / SH 35 at Corpus Christi |
| |
| North end | I-37 near San Antonio |
| Location | |
| Country | United States |
| Counties | Nueces, San Patricio, Bee, Karnes, Wilson, Bexar |
| Highway system | |
U.S. Highway 181 is a south–north U.S. Highway located entirely in the state of Texas. Both termini are at Interstate 37 (I-37), the road that it mainly parallels to the east. Its southern terminus is at I-37 in Corpus Christi near the Gulf of Mexico. Its northern terminus is at I-37 on the south side of San Antonio; prior to the Interstate era, US 181 traveled into Downtown San Antonio along Presa Street to an intersection with its parent route, US 81, which then ran along Alamo Street.