State Highway 31 (abbreviated SH-31) is a state highway in Oklahoma. It runs 132.6 miles^[1] in an irregular west-to-east pattern in the southeastern part of the state.

Quick Facts State Highway 31, Route information ...

State Highway 31
Route information
Maintained by ODOT
Length	132.6 mi (213.4 km)
Major junctions
West end	SH-48 south of Tupelo
Major intersections	US 75 / SH-3 in Coalgate US 69 / US 270 / SH-1 in McAlester
East end	US 59 / US 271 north of Panama
Location
Country	United States
State	Oklahoma
Highway system
Oklahoma State Highway System Interstate US State Turnpikes
← SH-30 → SH-32

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There are two spur highways branching from SH-31, SH-31A and SH-31B.

SH-31 begins at SH-48 seven miles (11 km) south of Tupelo. Two miles (3.2 km) east of here, SH-31B branches off, connecting the main highway with the town of Olney. SH-31 then continues for 10 miles (16 km) to Coalgate, the seat of Coal County, where it intersects US-75/SH-3. Leaving Coalgate, SH-31 turns north at SH-131, traveling 22 miles (35 km) to its junction with SH-31A, which connects with US-270 at Stuart. At SH-31A, SH-31 turns to the east, following the northern edge of the McAlester Army Ammunition Plant, arriving in McAlester, seat of Pittsburg County, 22 miles (35 km) later.^[2]

In McAlester, SH-31 forms a five-mile (8 km) concurrency with US-270 and SH-1, splitting up just east of the US-69 interchange on the east side of the city. SH-31 then sets off to the northeast, passing through Krebs, and crossing the south arm of Lake Eufaula.^[2]

At Quinton, 27 miles (43 km) from McAlester, SH-31 serves as the southern terminus of SH-71, then heads east, forming a six-mile (10 km) concurrency with SH-2 to the town of Kinta. At Kinta, SH-2 turns north, and SH-31 continues east, with a short dogleg concurrency with SH-82 at Lequire. Continuing on to the east, SH-31 serves as the southern terminus for SH-26 at McCurtain, then passes through Bokoshe before terminating at US-59/US-271, two miles (3 km) north of Panama.^[2]