National Route 23 (South Korea)

National Route 23 is a national highway in South Korea connects Gangjin County to Dongnam District, Cheonan. It established on August 31, 1971.대통령령 제5771호 일반국도노선지정령, 1971년 8월 31일 제정.

History 1967: Designated as National Route 23, Mokpo ~ Cheonan line, as a second-class national highway.1st- and 2nd-class national highway route designation ordinance, Presidential Decree No. 2845. August 31, 1971: Redesignated as "National Route 23, Mokpo ~ Cheonan line" under the National Highway Designation Decree.Presidential Decree No. 5771, National Highway Designation Decree, enacted August 31, 1971. September 8, 1973: Due to road realignment, the 1.64 km section in Buchang-dong, Nonsan-eup, Nonsan County was changed to a 1.44 km section between Buchang-dong and Hwaji-dong in Nonsan-eup.Ministry of Construction Notice No. 375, September 8, 1973. October 1, 1975: Opened a 2.24 km section between Namdang-ri, Hamyeol-myeon, Iksan County ~ Hongsa-ri, Baeksan-myeon, Gimje County, and abolished the existing 2.85 km section.Ministry of Construction Notice No. 110, October 1, 1975. December 30, 1976: Opened a 1.194 km section between Yochon-ri and Gyodong-ri, Gimje-eup, Gimje County, and abolished the existing 1.2 km section.Ministry of Construction Notice No. 179, December 30, 1976. July 31, 1980: Opened a 26.2 km section between Dongsari, Heungdeok-myeon, Gochang County ~ Singi-ri, Haengan-myeon, Buan County.Iri Regional Land Management Office Notice No. 27, July 31, 1980. March 14, 1981: Starting point changed from 'Mokpo-si, Jeollanam-do' to 'Daegu-myeon, Gangjin County, Jeollanam-do'. The line became 'Maryang ~ Cheonan' instead of 'Mokpo ~ Cheonan'.Presidential Decree No. 10247, National Highway Designation Decree, partial amendment, March 14, 1981. May 30, 1981: Road zone changed to the modified 94 km section under the amendment of Presidential Decree No. 10247, National Highway Designation Decree.Ministry of Construction Notice No. 191, May 30, 1981. June 24, 1981: Starting point changed from Daegu-myeon, Gangjin County to Gangjin-eup, Gangjin County, becoming Route 23, Gangjin ~ Cheonan line.National Highway Designation Decree, Presidential Decree No. 10371, amended June 24, 1981. August 12, 1981: Road zone changed to the modified 49 km section under the amendment of Presidential Decree No. 10371, National Highway Designation Decree.Ministry of Construction Notice No. 300, August 12, 1981. August 17, 1981: Opened newly upgraded national highway sections: 66.35 km from Dongsung-ri, Gangjin-eup, Gangjin County ~ Chungnyeol-ri, Jangheung-eup, Jangheung County; 50.65 km from Geonsan-ri, Jangheung-eup, Jangheung County ~ Sanjeong-ri, Yeongsanpo-eup, Naju County; 15.45 km from Jangsan-ri, Wanggok-myeon, Naju County ~ Unsan-ri, Donggang-myeon; and 4.9 km from Gokcham-ri, Hakgyo-eup, Hampyeong County ~ Sagori.Gwangju Regional Land Management Office Notice No. 22, August 17, 1981. January 19, 1993: Opened Hampyeong bypass and Hampyeong ~ Jangseong road (2.9 km section from Gigak-ri to Daedeok-ri, Hampyeong-eup, Hampyeong County).Iri Regional Land Management Office Notice 1993-1, January 19, 1993. March 31, 1999: Opened 3.14 km Daedeok bypass (Jamduri ~ Yeonji-ri, Daedeok-eup, Jangheung County).Iksan Regional Land Management Office Notice 1999-53, April 3, 1999. July 8, 1999: Opened 3.16 km Seongsong bypass (Amchi-ri ~ Hakcheon-ri, Seongsong-myeon, Gochang County), abolished existing 2.8 km section.Iksan Regional Land Management Office Notice 1999-114, July 12, 1999. December 23, 1999: Opened expanded 46.3 km four-lane section from Hwabon-ri, Jeongan-myeon, Gongju-si ~ Buchang-dong, Nonsan-si.Gongju–Nonsan National Highway Four-lane Opening, Yonhap News, December 18, 1999. December 28, 1999: Opened expanded 21.3 km four-lane section from Sinyong-dong, Iksan-si ~ boundary with Ganggyeong-eup.Iksan–Ganggyeong Four-lane Highway Opens, Yonhap News, December 25, 1999. December 31, 1999: Opened expanded 5.26 km section from Sagori, Hakgyo-myeon, Hampyeong County ~ Gigak-ri, Hampyeong-eup, abolished existing section.Iksan Regional Land Management Office Notice 1999-214, January 7, 2000. January 10, 2000: Opened expanded 30.44 km section from Buchang-dong, Nonsan-si ~ Sohak-dong, Gongju-si.Daejeon Regional Land Management Office Notice 2000-3, January 10, 2000. April 2000: Opened 2.84 km Chillyang bypass (Yeongbok-ri ~ Jang-gye-ri, Chillyang-myeon, Gangjin County), abolished existing 1.95 km section.Iksan Regional Land Management Office Notice 2000-65, May 3, 2000. November 11, 2000: Opened expanded 13.48 km section from Sohak-dong, Gongju-si ~ Hwabon-ri, Jeongan-myeon.Daejeon Regional Land Management Office Notice 2000-251, November 11, 2000. January 1, 2001: Opened 1.77 km Shingwang bypass (Samdeok-ri ~ Wolam-ri, Shingwang-myeon, Hampyeong County), abolished existing 1.4 km section.Iksan Regional Land Management Office Notice 2000-207, January 6, 2001. October 15, 2001: Opened expanded 8.84 km four-lane section from Samgye-ri, Daedeok-myeon, Jangseong County ~ Chilbo-ri, Shingwang-myeon, Hampyeong County.Iksan Regional Land Management Office Notice 2001-131, October 15, 2001. December 21, 2001: Opened expanded 7.87 km four-lane section from Chilbo-ri, Shingwang-myeon, Hampyeong County ~ Sinchon-ri, Shingwang-myeon.Iksan Regional Land Management Office Notice 2001-179, December 21, 2001. December 31, 2001: Opened expanded 2.56 km four-lane section from Sinchon-ri ~ Gigak-ri, Hampyeong-eup, Hampyeong County.Iksan Regional Land Management Office Notice 2001-189, December 31, 2001. December 27, 2002: Opened expanded 6.2 km four-lane section from Gokcham-ri, Hakgyo-eup, Hampyeong County ~ Amchi-ri, Seongsong-myeon, Gochang County.Iksan Regional Land Management Office Notice 2002-178, December 27, 2002. December 26, 2003: Opened expanded 8.6 km four-lane section from Amchi-ri, Seongsong-myeon, Gochang County ~ Bongam-ri, Seongsong-myeon.Iksan Regional Land Management Office Notice 2003-200, December 26, 2003. December 31, 2004: Opened expanded 8.08 km four-lane section from Bongam-ri, Seongsong-myeon, Gochang County ~ Seongsan-ri, Haengan-myeon, Buan County.Iksan Regional Land Management Office Notice 2004-236, December 31, 2004. December 29, 2005: Opened expanded 8.8 km four-lane section from Seongsan-ri, Haengan-myeon, Buan County ~ Singi-ri, Haengan-myeon.Iksan Regional Land Management Office Notice 2005-249, December 29, 2005. December 28, 2006: Opened expanded 11.7 km four-lane section from Singi-ri, Haengan-myeon, Buan County ~ Geonsan-ri, Jangheung-eup, Jangheung County.Iksan Regional Land Management Office Notice 2006-212, December 28, 2006. December 31, 2007: Opened expanded 8.6 km four-lane section from Chungnyeol-ri, Jangheung-eup, Jangheung County ~ Geonsan-ri.Iksan Regional Land Management Office Notice 2007-238, December 31, 2007. December 31, 2008: Opened expanded 4.1 km four-lane section from Dongsung-ri, Gangjin-eup, Gangjin County ~ Chungnyeol-ri, Jangheung-eup.Iksan Regional Land Management Office Notice 2008-210, December 31, 2008. December 30, 2009: Opened expanded 6.7 km four-lane section from Namdang-ri, Hamyeol-myeon, Iksan-si ~ Hongsa-ri, Baeksan-myeon, Gimje-si.Iksan Regional Land Management Office Notice 2009-210, December 30, 2009. December 30, 2010: Opened expanded 6.48 km four-lane section from Yeonji-ri, Daedeok-myeon, Jangseong County ~ Samgye-ri, Daedeok-myeon.Iksan Regional Land Management Office Notice 2010-224, December 30, 2010. December 31, 2011: Opened expanded 4.44 km four-lane section from Sanjeong-ri, Yeongsanpo-eup, Naju-si ~ Jangsan-ri, Wanggok-myeon.Iksan Regional Land Management Office Notice 2011-223, December 31, 2011. December 28, 2012: Opened expanded 5.42 km four-lane section from Unsan-ri, Donggang-myeon, Naju-si ~ Gokcham-ri, Hakgyo-eup, Hampyeong County.Iksan Regional Land Management Office Notice 2012-258, December 28, 2012. December 27, 2013: Opened expanded 4.39 km four-lane section from Jang-gye-ri, Chillyang-myeon, Gangjin County ~ Amchi-ri, Seongsong-myeon, Gochang County.Iksan Regional Land Management Office Notice 2013-263, December 27, 2013. December 30, 2014: Opened expanded 8.3 km four-lane section from Geonsan-ri, Jangheung-eup, Jangheung County ~ Chungnyeol-ri.Iksan Regional Land Management Office Notice 2014-287, December 30, 2014. December 30, 2015: Opened expanded 10.1 km four-lane section from Chillyang-myeon, Gangjin County ~ Jangheung-eup, Jangheung County.Iksan Regional Land Management Office Notice 2015-262, December 30, 2015. December 29, 2016: Opened expanded 6.9 km four-lane section from Baeksan-myeon, Gimje-si ~ Donggok-myeon, Iksan-si.Iksan Regional Land Management Office Notice 2016-246, December 29, 2016. December 28, 2017: Opened expanded 4.79 km four-lane section from Donggok-myeon, Iksan-si ~ Namdang-ri, Hamyeol-myeon, Iksan-si.Iksan Regional Land Management Office Notice 2017-267, December 28, 2017. December 28, 2018: Opened expanded 4.69 km four-lane section from Jangsan-ri, Wanggok-myeon, Naju-si ~ Unsan-ri, Donggang-myeon.Iksan Regional Land Management Office Notice 2018-256, December 28, 2018. December 31, 2019: Opened expanded 8.2 km four-lane section from Sanjeong-ri, Yeongsanpo-eup, Naju-si ~ Jangsan-ri, Wanggok-myeon.Iksan Regional Land Management Office Notice 2019-258, December 31, 2019. December 29, 2020: Opened expanded 3.8 km four-lane section from Hongsa-ri, Baeksan-myeon, Gimje-si ~ Baeksan-myeon.Iksan Regional Land Management Office Notice 2020-229, December 29, 2020. January 1, 2021: The section from Uljin to Hupo Port (18.7 km) was transferred to National Route 7.Presidential Decree No. 31381, December 29, 2020 January 1, 2022: The section from Donghae to Mukho (5.3 km) was transferred to National Route 7.Presidential Decree No. 31729, December 28, 2021 January 1, 2023: The section from Samcheok to Dogye (17.9 km) was transferred to National Route 7.Presidential Decree No. 32249, December 27, 2022 January 1, 2024: The section from Sokcho to Yangyang (19.0 km) was transferred to National Route 7.Presidential Decree No. 32805, December 26, 2023

Main stopovers South Jeolla Province Gangjin County - Jangheung County - Yeongam County - Naju - Hampyeong County - Yeonggwang County North Jeolla Province Gochang County South Jeolla Province Yeonggwang County North Jeolla Province Gochang County - Buan County - Gimje - Iksan South Chungcheong Province Nonsan - Gongju - Cheonan Sejong City Jeonui-myeon South Chungcheong Province Cheonan Sejong City Sojeong-myeon South Chungcheong Province Cheonan

Major intersections

(■): Motorway IS: Intersection, IC: Interchange

South Jeolla Province