State Highway 2, abbreviated SH-2 or OK-2, is a designation for two distinct highways maintained by the U.S. state of Oklahoma. Though they were once connected, the middle section of highway was concurrent with three different U.S. highways, so the middle section was decommissioned for reasons of redundancy.

Quick Facts State Highway 2, Route information ...

State Highway 2
Route information
Maintained by ODOT
Section 1
Length	116.7 mi[1] (187.8 km)
South end	SH-3 west of Antlers
Major intersections	US 271 in Clayton US 270 in Wilburton SH-9 in Whitefield I-40 in Warner
North end	US 64 / US 266 in Warner
Section 2
Length	26.3 mi[2] (42.3 km)
South end	US 60 / US 69 in Vinita
North end	US-59 at the Kansas state line
Location
Country	United States
State	Oklahoma
Highway system
Oklahoma State Highway System Interstate US State Turnpikes
← SH-1 → SH-3

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The southern section of highway runs from Antlers to U.S. Highway 64 near Warner, covering 116.7 miles (187.8 km)^[1] through the southeastern part of the state. The northern SH-2 runs for 26.3 miles (42.3 km)^[2] through Craig County in northeastern Oklahoma.

The northern SH-2, between Vinita and the Kansas state line, was once part of US-73.^[4]

Until the early 1980s a portion of SH-2 was one of the last unpaved state highways in the Oklahoma road network. The section between the communities of Kosoma, Oklahoma and Stanley, Oklahoma in the Kiamichi River Valley, remained gravel. Its builders during the 1930s and 1940s, in order to save the expense of building two bridges across the Kiamichi River, routed the highway mid-way up the flank of Bull Creek Mountain. The highway traversed the mountain at its midway point, with no shoulders or guard rails. During the 1980s a new route was opened in the floor of the valley, featuring modern bridges across Pine Creek and the Kiamichi River. The old route on Bull Creek Mountain was decommissioned and is no longer in use.^{[citation needed]}

The old route from Clayton to Antlers (using Bull Creek Mountain) was known as Hwy 144. When the Route was renovated through the Valley (crossing the river in 2 places) and paved, the Route was renamed SH2.^[5]

The section of SH-2 between I-40 and SH-9 was pressed into service as a detour for eastbound I-40 traffic after the collapse of its bridge over the Arkansas River on May 26, 2002.^[6][7]