Route information | ||||
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Maintained by TxDOT | ||||
Length | 47.71 mi[1] (76.78 km) | |||
Existed | 1932–present | |||
Major junctions | ||||
West end | Future I-69C / US 281 / FM 1017 in Linn | |||
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East end | North Shore Drive in Port Mansfield | |||
Location | ||||
Country | United States | |||
State | Texas | |||
Counties | Hidalgo, Willacy | |||
Highway system | ||||
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State Highway 186 (SH 186) is a state highway in the Rio Grande Valley in Hidalgo and Willacy counties in Texas, United States, that connects U.S. Route 281 (US 281), future Interstate 69C (Future I-69C), and Farm to Market Road 1017 (FM 1017) in Linn with the Gulf of Mexico at Port Mansfield.[1][2][3]