The Honam Expressway () is an expressway serving the Honam region in South Korea. The freeway connects Nonsan on the Nonsan-Cheonan Expressway and Honam Expressway Branch Line to Gwangju and Suncheon on the Namhae Expressway. The freeway's route number is 25. The Honam Expressway Branch is route number 251, and connects Nonsan on the Honam Expressway to Daejeon on the Gyeongbu Expressway.
History April 15, 1970: Construction Begin 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 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. December 20, 2022: South Jangseong Junction opened to traffic. February 20, 2023: Merged with Nonsan-Cheonan Expressway. October 24, 2024: North Jangseong Interchange opened to traffic. November 22, 2025: West Wanju Junction 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
IC: Interchange, JC: Junction, SA: Service area, TG:Tollgate
No. Name Korean name Hanja name Connections Notes Location Connected directly with Namhae Expressway Suncheon 순천 시점 順天 始點 Namhae Expressway Suncheon Jeonnam 1 W. Suncheon IC 서순천나들목 西順天나들목 National Route 17 SA Suncheon SA 순천휴게소 順天休憩所 Suncheon-bound only 2 Seungju IC 승주나들목 昇州나들목 National Route 22 3 Songgwangsa·Juam IC 송광사·주암나들목 松廣寺·住岩나들목 National Route 18 National Route 27 SA Juam SA 주암휴게소 住岩休憩所 4 Seokgok IC 석곡나들목 石谷나들목 National Route 27 Gokseong 5 Gokseong IC 곡성나들목 谷城나들목 National Route 27 SA Gokseong Rail Village SA 곡성기차마을휴게소 谷城氣車마을休憩所 6 Okgwa IC 옥과나들목 玉果나들목 National Route 13 National Route 15 7 Daedeok JC 대덕분기점 大德分岐點 Gochang-Damyang Expressway Suncheon-bound only Damyang 8 Changpyeong IC 창평나들목 昌平나들목 Local Route 60 9 Goseo JC 고서분기점 古西分岐點 Gwangju-Daegu Expressway TG E. Gwangju TG 동광주요금소 東光州料金所 Main Tollgate Dong-gu Gwangju 9-1 Munheung JC 문흥분기점 文興分岐點 Gwangju-Daegu Expressway Gwangju Loop 2 National Route 29 10 E. Gwangju IC 동광주나들목 東光州나들목 National Route 29 Cheonan-bound only 11 Yongbong IC 용봉나들목 龍鳳나들목 Gwangju Biennale Museum exit only 12 W. Gwangju IC 서광주나들목 西光州나들목 National Route 1 13 Dongnim IC 동림나들목 東林나들목 Bitgoeul-daero 14 Sanwol JC 산월분기점 山月分岐點 Gwangju Loop 2 Muan-Gwangju Expressway(Indirect) Gwangsan 15 Gwangsan IC 광산나들목 光山나들목 National Route 13 15-1 N. Gwangsan IC 북광산나들목 北光山나들목 Jingok Indust. Compx. Highway Jangseong Jeonnam TG Gwangju TG 광주요금소 光州料金所 Main Tollgate 15-2 S. Jangseong JC 남장성분기점 南長城分岐點 Gwangju Ring Expressway 16 Jangseong IC 장성나들목 長城나들목 National Route 1 National Route 24 17 Jangseong JC 장성분기점 長城分岐點 Gochang-Damyang Expressway SA Baegyangsa SA 백양사휴게소 白羊寺休憩所 18 Baegyangsa IC 백양사나들목 白羊寺나들목 Local Route 15 TN Honam TN 호남터널 湖南터널 Guard of Jeollanam-do andJeollabuk-do 19 Naejangsan IC 내장산나들목 內藏山나들목 Local Route 708 Jeongeup Jeonbuk 20 Jeongeup IC 정읍나들목 井邑나들목 National Route 29 SA Jeongeup Nokdujanggun SA 정읍녹두장군휴게소 井邑綠豆將軍休憩所 21 Taein IC 태인나들목 泰仁나들목 National Route 1 22 Geumsansa IC 금산사나들목 金山寺나들목 Local Route 712 Gimje 23 Gimje IC 김제나들목 金堤나들목 Local Route 714 SA Iseo SA 이서휴게소 伊西休憩所 Wanju 23-1 W. Wanju JC Saemangeum–Pohang Expressway Iseo JC 이서분기점 伊西分岐點 Saemangeum–Pohang Expressway (December 2025) 24 W. Jeonju IC 서전주나들목 西全州나들목 Local Route 716 25 Jeonju IC 전주나들목 全州나들목 National Route 26 National Route 1 Jeonju 26 Samnye IC 삼례나들목 參禮나들목 Local Route 799 Iksan 27 Iksan JC 익산분기점 益山分岐點 Iksan-Pohang Expressway Suncheon-Wanju Expressway 28 Iksan IC 익산나들목 益山나들목 Local Route 799 Wanju SA Iksan Mireuksaji SA 익산미륵사지휴게소 益山彌勒寺址休憩所 Iksan 29 Nonsan JC 논산분기점 論山分岐點 Honam Expressway BranchNonsan-Cheonan Expressway Nonsan Chungnam Interchange numbered after 30 is belonged to Nonsan-Cheonan Expressway
Branch line (Nonsan-Daejeon) see Honam Expressway Branch
External links KEC (Korea Expressway Corporation) MOLIT South Korean Government Transport Department