December 30, 1970:
Daejeon-
Jeonju section (79.1 km) opened to traffic.
November 14, 1973:
Jeonju-
Suncheon section (181.6 km) opened to traffic.
June 1, 1978: Begins becoming charged.
April 25, 1983: Work begins to widen to four lanes in Daejeon-Jeonju Section.
June 30, 1986: The 4-lane expansion of the Daejeon–Jeonju section was completed.
September 11, 1986: The 4-lane expansion of the Jeonju–
Gwangju section was completed.
September 1, 1989: The 4-lane expansion of the section in
Gwangju (W.Gwangju IC-Goseo JCT) was completed.
November 8, 1996: The 4-lane expansion of the
Gwangju-
Suncheon section was completed.
January 1, 1999: West Jeonju Interchange (서전주IC) opened to traffic.
August 25, 2001: Divides between Honam Expressway (Suncheon–Nonsan) to
Honam Expressway Branch (Nonsan-Daejeon)
August 31, 2002:
Naejangsan IC (내장산IC) opened to traffic.
December 29, 2004: Dongnim IC (동림IC) opened to traffic.
May 15, 2007: Sanwol JCT (산월분기점) opened to traffic.
December 17, 2009: The eight-lane expansion of the Munheung-Goseo section was completed and Munheung JCT (문흥분기점) opened to traffic.
July 20, 2010: The six-lane expansion of the East Gwangju-Munheung section was completed.
October 27, 2010: The six, eight-lane[clarification needed] expansion of the Samnye-Nonsan section was completed.
August 1, 2012: Motjae Tunnel (못재터널) opened to traffic.
January 20, 2016: North Gwangsan Interchange (북광산IC) opened to traffic.
Compositions
Lanes
W. Suncheon IC–Goseo JC, E. Gwangju IC–Samnye IC: 4
Munheung JC–E. Gwangju IC, Samnye IC–Iksan JC: 6
Goseo JC–Munheung JC, Iksan JC–Nonsan JC: 8
Length
194.22 km
Speed limits
100 km/h
List of facilities
This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. Please consult
this guideline for information on how to create one. Please
improve this article if you can.(November 2021)
IC: Interchange, JC: Junction, SA: Service area, TG:Tollgate