Highway 31 was one of the original Arkansas state highways when the system was first numbered in 1926.[9] The route ran from Sherrill north roughly along its current routing, terminating at Beebe.
^ abcPlanning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(Database) on 23 June 2011. Retrieved June 9, 2011.
^ abGeneral Highway Map, Jefferson County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2011. Retrieved October 17, 2011.
^ abcdeGeneral Highway Map, White County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2009. Retrieved October 17, 2011.
^ abcGeneral Highway Map, Lonoke County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2010. Retrieved October 17, 2011.
^ abLonoke, Arkansas(PDF) (Map). Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. August 2014. Retrieved November 16, 2016.
^Beebe, Arkansas(PDF) (Map). Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. August 2007. Retrieved November 16, 2016.