National Route 21 (South Korea)

National Route 21 is a national highway in South Korea connects Namwon to Icheon. It established on 31 August 1971.대통령령 제5771호 일반국도노선지정령, 1971년 8월 31일 제정.

History August 31, 1971: Became National Route 21 Gunsan ~ Cheonan Line by the General National Highway Route Designation Decree.Presidential Decree No. 5771 General National Highway Route Designation Decree, enacted on August 31, 1971. September 8, 1973: Due to alignment improvement, road zone changed from 956m section in Boryeong-ri, Jupo-myeon, Boryeong-gun to 610m, 600m section in Myeongcheon-ri, Daecheon-eup, Boryeong-gun to 736m, 650m section in Ogwan-ri, Hongseong-eup, Hongseong-gun to 480m, 300m section in Namjang-ri, Hongseong-eup, Hongseong-gun to 170m, 370m section in Sangjeong-ri ~ Baekgye-ri, Gwangcheon-eup, Hongseong-gun to 220m, 560m section in Yongam-ri, Gwangcheon-eup, Hongseong-gun to 500mMinistry of Construction Notice No. 375, September 8, 1973. August 8, 1975: Total 2.675km section from Okdong-ri, Nampo-myeon ~ Duryong-ri, Ungcheon-myeon, Boryeong-gun opened and existing 3.12km section abolished, 660m section from Gyejeong-ri ~ Jiseok-ri, Eungbong-myeon, Yesan-gun opened and existing 830m section abolished, total 2.675km section from Seongnae-ri, Biin-myeon ~ Hwasan-ri, Jongcheon-myeon, Seocheon-gun opened and existing 3.78km section abolishedMinistry of Construction Announcement No. 88, August 8, 1975. March 14, 1981: End point extended from 'Cheonan-si, Chungcheongnam-do' to 'Janghowon-eup, Icheon-gun, Gyeonggi-do'. Accordingly changed from 'Gunsan ~ Cheonan Line' to 'Gunsan ~ Janghowon Line'.Presidential Decree No. 10247 General National Highway Route Designation Decree, partially amended on March 14, 1981. April 16, 1981: Sinchang-dong, Janghang-eup, Seocheon-gun, Chungcheongnam-do ~ Wangjang-ri, Gamgok-myeon, Eumseong-gun, Chungcheongbuk-do 95.632km section upgraded to national highway openedDaejeon Regional Land Management Office Announcement No. 7, April 16, 1981. May 30, 1981: Road zone changed to the extended 63km section according to the amendment of Presidential Decree No. 10247 General National Highway Route Designation DecreeMinistry of Construction Notice No. 191, May 30, 1981. September 29, 1986: Existing designated Sindae-ri ~ Yeonchun-ri, Buk-myeon, Mokcheon-myeon, Cheonwon-gun 3.65km section, Nam-dong ~ Jangjae-ri, Baebang-myeon, Asan-gun, Onyang-si 3.52km section abolishedDaejeon Regional Land Management Office Announcement No. 37, September 29, 1986. January 31, 1987: Mojong-dong ~ Ssangyong-dong, Cheonan-si 11.34km section including Onyang Bypass Road (Mojong-dong ~ Gwongok-dong, Onyang-si) openedDaejeon Regional Land Management Office Announcement No. 2, January 31, 1987. May 26, 1987: Existing designated Jusan Bridge (Yaryong-ri, Jusan-myeon, Boryeong-gun), Gwangcheon-eup area (Ongam-ri ~ Sinjin-ri, Gwangcheon-eup, Hongseong-gun), Yesan-eup area (Jugyo-ri ~ Sanseong-ri, Yesan-eup, Yesan-gun), Eumnae-ri, Sinchang-myeon, Asan-gun, Baebang-myeon area (Sindong-ri ~ Gongsu-ri, Baebang-myeon, Onyang-si) sections abolishedDaejeon Regional Land Management Office Announcement No. 15, May 26, 1987. July 21, 1987: Singye-ri ~ Yeonchun-ri, Buk-myeon, Mokcheon-myeon, Cheonwon-gun 2.88km section openedDaejeon Regional Land Management Office Announcement No. 23, July 21, 1987. March 25, 1988: Maon-ri, Guhang-myeon, Hongseong-gun 280m section opened and existing 310m section abolished, Namjang-ri, Hongseong-eup, Hongseong-gun 160m section opened and existing 190m section abolished, Jungnim-ri ~ Jaejeong-ri, Cheongso-myeon, Boryeong-gun 270m section opened and existing 340m section abolished, Segyo-ri, Baebang-myeon, Asan-gun 150m section opened and existing 160m section abolishedDaejeon Regional Land Management Office Announcement No. 9, March 25, 1988. July 1, 1996: Starting point extended from 'Gunsan-si, Jeollabuk-do' to 'Jeonju-si, Jeollabuk-do'. Accordingly became 'Jeonju ~ Icheon Line'.Presidential Decree No. 15101 General National Highway Route Designation Decree, partially amended on July 1, 1996. December 20, 1997: Yongjeong-dong, Deokjin-gu, Jeonju-si ~ Naecho-dong, Gunsan-si 45.5km section designated as automobile-only roadMinistry of Construction and Transportation Announcement No. 1997-445, December 20, 1997. December 24, 1997: Daegyo-ri, Hongseong-eup, Hongseong-gun ~ Yeokap-ri, Osan-myeon, Yesan-gun 15.1km section newly opened, existing 17.2km section abolishedDaejeon Regional Land Management Office Announcement No. 1997-413, December 24, 1997. January 8, 1998: Gwan-ri ~ Seongnae-ri, Biin-myeon, Seocheon-gun 3.24km section newly opened, existing 2.1km section abolishedDaejeon Regional Land Management Office Announcement No. 1997-428, January 8, 1998. April 9, 1998: Ssangjeong-ri ~ Ingok-ri, Maengdong-myeon, Eumseong-gun 1.6km section opened, existing 1.65km section abolishedDaejeon Regional Land Management Office Announcement No. 1998-147, April 9, 1998. September 24, 1998: Eumnae-ri, Sinchang-myeon ~ Nam-dong, Asan-si, Chungcheongnam-do 12.7km section designated as automobile-only roadMinistry of Construction and Transportation Announcement No. 1998-407, September 24, 1998. March 23, 2001: Road zone changed for Banwol-dong ~ Yongjeong-dong, Deokjin-gu, Jeonju-si 660m section due to Jeonju Interchange improvement projectJeonju-si Announcement No. 2001-105, March 23, 2001. May 14, 2001: Hammok-ri, Deoksan-myeon, Jincheon-gun 880m section opened, existing 920m section abolishedDaejeon Regional Land Management Office Announcement No. 2001-99, June 2, 2001. July 1, 2001: Naecho ~ Oksan Road (Gunjang Industrial Base Access Road, Naecho-dong ~ Dangbuk-ri, Oksan-myeon, Gunsan-si) 11.7km section expansion openingIksan Regional Land Management Office Announcement No. 2001-95, June 20, 2001. August 25, 2001: Starting point extended from 'Jeonju-si, Jeollabuk-do' to 'Daegang-myeon, Namwon-si, Jeollabuk-do'. Accordingly became 'Namwon ~ Icheon Line'.Presidential Decree No. 17348 General National Highway Route Designation Decree, fully revised on August 25, 2001. November 7, 2001: Daecheon-dong, Boryeong-si ~ Ongam-ri, Gwangcheon-eup, Hongseong-gun 15.45km section expansion opening, existing 16.2km section abolishedDaejeon Regional Land Management Office Announcement No. 2001-251, November 7, 2001. December 27, 2001: Gwanchang-ri ~ Jugyo-ri, Jugyo-myeon, Boryeong-si 2.42km section expansion opening, existing 2.3km section abolishedDaejeon Regional Land Management Office Announcement No. 2001-294, December 27, 2001. December 31, 2001: Oksan ~ Daeya Road (Gunjang Industrial Base Access Road, Dangbuk-ri, Oksan-myeon ~ Bokgyo-ri, Daeya-myeon, Gunsan-si, Unhoe-ri ~ Okseok-ri, Gaejeong-myeon, Gunsan-si) 9.8km section expansion opening. Daeya ~ Gongdeok, Seongdeok ~ Daeya Road 2km section simultaneously openedIksan Regional Land Management Office Announcement No. 2001-239, January 3, 2002. May 28, 2002: Daeya ~ Gongdeok ~ Jeonju Road (Jochon-dong, Deokjin-gu, Jeonju-si ~ Jigyeong-ri, Daeya-myeon, Gunsan-si) 25.9km section expansion openingIksan Regional Land Management Office Announcement No. 2002-86, May 24, 2002. December 9, 2002: Okdong-ri, Nampo-myeon ~ Gwanchang-ri, Jugyo-myeon, Boryeong-si 10.4km section designated as automobile-only roadDaejeon Regional Land Management Office Announcement No. 2002-291, December 9, 2002. July 5, 2004: Sin-ri, Sanggwan-myeon, Wanju-gun ~ Wondang-dong, Wansan-gu, Jeonju-si 8.91km section designated as automobile-only roadIksan Regional Land Management Office Announcement No. 2004-115, July 5, 2004. December 5, 2004: Gyoseong-ri ~ Sangsin-ri, Jincheon-eup, Jincheon-gun 41.km section expansion openingDaejeon Regional Land Management Office Announcement No. 2004-260 , December 10, 2004. December 30, 2005: Guryong-dong ~ Songsan-dong, Jeongeup-si 3.2km section expansion openingIksan Regional Land Management Office Announcement No. 2005-217, December 13, 2005. December 31, 2005: Hwasan-dong ~ Gwanchang-ri, Jugyo-myeon, Boryeong-si 4.24km section expansion openingDaejeon Regional Land Management Office Announcement No. 2005-230, December 31, 2005. August 16, 2006: Asan-si National Highway Alternative Bypass Road (Haengmok-ri, Sinchang-myeon ~ Guryeong-ri, Baebang-myeon, Asan-si) 11.9km section expansion openingDaejeon Regional Land Management Office Announcement No. 2006-97, August 16, 2006. December 20, 2007: Deoksan ~ Yesan Road (Gwanjak-ri ~ Gungpyeong-ri, Yesan-eup, Yesan-gun) 3.6km section expansion openingDaejeon Regional Land Management Office Announcement No. 2007-168, December 17, 2007. December 31, 2007: Hwaseong-ri, Seongnam-myeon ~ Tapwon-ri, Byeongcheon-myeon, Cheonan-si 3.17km section expansion opening, existing Sangdong-ri, Buk-myeon ~ Tapwon-ri, Byeongcheon-myeon, Cheonan-si 4.02km section abolishedDaejeon Regional Land Management Office Announcement No. 2007-167, December 17, 2007. July 14, 2008: Asan-si National Highway Alternative Bypass Road (Eumnae-ri ~ Haengmok-ri, Sinchang-myeon, Asan-si) 1.5km section expansion openingDaejeon Regional Land Management Office Announcement No. 2008-129, July 10, 2008. December 26, 2008: Gui ~ Yongjeong Road (Sin-ri, Sanggwan-myeon, Wanju-gun ~ Samcheon-dong 3-ga, Wansan-gu, Jeonju-si) 16.7km section openedIksan Regional Land Management Office Announcement No. 2008-161 , December 26, 2008. December 31, 2008: Hongseong Southern Bypass Road (Maon-ri, Guhang-myeon ~ Jangseong-ri, Geumma-myeon, Hongseong-gun) 5.8km section newly opened, existing 6.4km section passing through Hongseong town center abolishedDaejeon Regional Land Management Office Announcement No. 2008-248, December 31, 2008. December 22, 2009: Okdong-ri, Nampo-myeon ~ Hwasan-dong, Boryeong-si 7.09km section expansion opening, existing Okdong-ri, Nampo-myeon ~ Gwanchang-ri, Jugyo-myeon, Boryeong-si 10.2km section abolishedDaejeon Regional Land Management Office Announcement No. 2009-268, Boryeong-si Announcement No. 2009-905, December 30, 2009. November 22, 2010: Eumnae-ri, Sinchang-myeon, Asan-si 600m section expansion openingDaejeon Regional Land Management Office Announcement No. 2010-180, November 26, 2010. December 31, 2010: Due to Asan-si National Highway Alternative Bypass Road opening, existing Eumnae-ri, Sinchang-myeon ~ Guryeong-ri, Baebang-eup, Asan-si 11.5km section abolishedDaejeon Regional Land Management Office Announcement No. 2010-200, January 4, 2011. March 28, 2011: Yongjeong-dong, Deokjin-gu, Jeonju-si ~ Yongheung-ri, Yongjin-myeon, Wanju-gun 11.23km section designated as automobile-only roadIksan Regional Land Management Office Announcement No. 2011-44, March 28, 2011. November 28, 2012: Jincheon IC ~ Geumwang Road Section 1 (Sangsin-ri, Jincheon-eup, Jincheon-gun ~ Masan-ri, Maengdong-myeon, Eumseong-gun) 11.02km section expansion opening, existing Sangsin-ri, Jincheon-eup, Jincheon-gun ~ Bonseong-ri, Maengdong-myeon, Eumseong-gun 9.6km section abolishedDaejeon Regional Land Management Office Announcement No. 2012-189, November 27, 2012. December 28, 2012: Jincheon IC ~ Geumwang Road Section 2 (Masan-ri, Maengdong-myeon ~ Gakhoe-ri, Geumwang-eup, Eumseong-gun) 9.9km section expansion opening, existing Bonseong-ri, Maengdong-myeon ~ Byeongam-ri, Saenggeuk-myeon, Eumseong-gun 11.762km section abolishedDaejeon Regional Land Management Office Announcement No. 2012-210, December 24, 2012. December 19, 2013: Guryeong-ri, Baebang-eup, Asan-si ~ Sinbang-dong, Dongnam-gu, Cheonan-si 7.0km section expansion opening, existing Gongsu-ri ~ Buksu-ri, Baebang-eup, Asan-si 1.5km section abolishedDaejeon Regional Land Management Office Announcement No. 2013-234, December 13, 2013. February 13, 2015: Yongjeong Intersection ~ Banwol Intersection among Yongjeong ~ Yongjin Road (Yongjeong-dong ~ Goryang-dong, Deokjin-gu, Jeonju-si) 3.2km section expansion openingIksan Regional Land Management Office Announcement No. 2015-10, February 11, 2015.