Farm to Market Road 170
Farm to Market Road 170 (FM 170) is a 114.6-mile (184.4 km) highway maintained by the Texas Department of Transportation (TxDOT) in Presidio and Brewster counties in Texas. The route, known locally as the River Road, runs along the United States side of the Rio Grande which in Texas forms the international boundary between the U.S. and Mexico. The road runs from Candelaria through the city of Presidio as well as several smaller communities and former settlements to State Highway 118 in Study Butte near Big Bend National Park. The road also passes through the southern portion of Big Bend Ranch State Park.
Farm to Market Road 170 | ||||
|---|---|---|---|---|
| Route information | ||||
| Maintained by TxDOT | ||||
| Length | 114.580 mi (184.399 km) | |||
| Existed | June 11, 1945–present | |||
| Major junctions | ||||
| West end | Chispa Road in Candelaria | |||
| US 67 in Presidio | ||||
| East end | SH 118 in Study Butte | |||
| Location | ||||
| Country | United States | |||
| State | Texas | |||
| Counties | Presidio, Brewster | |||
| Highway system | ||||
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The highway was first designated in 1945 and over the years was gradually extended outward from Presidio. Eastern portions of the road in Brewster County, however, had several previous highway designations going back to 1939.
In addition to SH 118 in Study Butte, FM 170 has highway intersections in Presidio with U.S. Route 67 and its auxiliary route Business U.S. Route 67-A along with State Highway Spur 203.