The highway is maintained by the Arkansas Department of Transportation (ArDOT).

[a] The highway begins at a junction with AR 33 City (AR 33C, 6th Street / Gregory Street) in the south part of the city and runs due south to the Carl E. Bailey Generating Station near the White River, owned by the Woodruff Electric Cooperative.

[4] ArDOT maintains AR 339 like all other parts of the state highway system, including tracking the volume of traffic using its roads in surveys.

[5] For reference, the American Association of State Highway and Transportation Officials (AASHTO), classifies roads with fewer than 400 VPD as a very low volume local road.

[8] The Arkansas State Highway Commission created AR 369 on June 23, 1965, during a period of state highway system expansion; the alignment has not changed since creation.