Texas State Highway 251

State Highway 251 (SH 251) is a Texas state highway running between Olney and Newcastle. The route was designated on June 22, 1937 from Newcastle south to Old Fort Belknap, and was extended northward to Olney mainly along its current route on September 26, 1939 when SH 24 was rerouted.^[3] The section from Newcastle to the fort was removed on February 23, 1993 and transferred to FM 61. One small section in Newcastle was transferred to FM 926

State Highway 251
SH 251, highlighted in red
Route information
Maintained by TxDOT
Length	13.497 mi[1] (21.721 km)
Existed	1937[2]–present
Major junctions
South end	FM 926 in Newcastle
North end	SH 79 in Olney
Location
Country	United States
State	Texas
Highway system
Highways in Texas Interstate US State Former Toll Loops Spurs FM/RM Park Rec
← SH 250 → SH 252

Junction list

The entire route is in Young County.

Location	mi	km	Destinations	Notes
Newcastle			FM 926
​			FM 3329
Olney			SH 79
1.000 mi = 1.609 km; 1.000 km = 0.621 mi