Texas State Highway 118

State Highway 118
SH 118, highlighted in red
Route information
Maintained by TxDOT
Length	155.272 mi[1] (249.886 km)
Existed	by 1928–present
Major junctions
South end	Big Bend National Park
Major intersections	US 67 / US 90 at Alpine SH 223 at Alpine SH 17 at Fort Davis SH 166 near Valentine
North end	I-10 / RM 2424 at Kent
Location
Country	United States
State	Texas
Counties	Brewster, Jeff Davis, Culberson
Highway system
Highways in Texas Interstate US State Toll Loops Spurs FM/RM Park Rec
← SH 117 → SH 119

State Highway 118 (SH 118) is a 155.3-mile (249.9 km) state highway in the U.S. state of Texas that runs from Big Bend National Park north to Kent and passes through the towns of Study Butte, Alpine, and Fort Davis. SH 118 is maintained by the Texas Department of Transportation (TxDOT). The road lies entirely within the Trans-Pecos region of Texas. SH 118 is a two-lane road along its length except for a section in Alpine where the route follows the path of U.S. Route 67 and U.S. Route 90. All of the route except for the 2.8-mile (4.5 km) section between Big Bend National Park and Farm to Market Road 170 is included in the Texas Historical Commission's Texas Mountain Trail.

The road passes through or along several state and federal parks and other wildlife preservation areas. These include Big Bend National Park and Fort Davis National Historic Site of the National Park Service, Elephant Mountain Wildlife Management Area and Davis Mountains State Park operated by the Texas Parks and Wildlife Department, and the Davis Mountains Preserve of the Nature Conservancy of Texas. The road is in the Chihuahuan Desert and passes mostly through scrub land except in the higher elevations of the Davis Mountains where the road encounters forested sky islands. The road also provides access to the University of Texas at Austin's McDonald Observatory.