National Route 3 is a national highway in South Korea connects Namhae to Chosan. Due to the separation of Korean Peninsula, it de facto ends in Cheorwon by now. It was established on 31 August 1971.대통령령 제5771호 일반국도노선지정령, 1971년 8월 31일 제정. History

1970s On 31 December 1971, the section from Sindang-dong to Cheongnyangni opened. At the same time, Seongbuk station was renamed Kwangwoon University station.서울특별시 도시철도본부 연혁 [History of Seoul Metropolitan Subway]. Urban Railway Headquarters, Seoul Metropolitan Government. 2008. On 15 August 1974, the section from Seoul Station to Cheongnyangni began operation. At the same time, stations at Seoul Station, City Hall, Jonggak, Jongno 3-ga, and Jongno 5-ga opened. On 15 August 1974, the line was designated as part of Seoul Subway Line 1. On 10 March 1978, the section from Cheongnyangni to Seongbuk opened.

1980s On 7 January 1981, the section from Seongbuk to Seokgye opened. On 22 December 1985, the section from Seokgye to Seongsu opened. On 2 September 1986, the section from Seongsu to Wangsimni opened. On 23 December 1988, the section from Wangsimni to Gunja opened. On 20 October 1989, the section from Gunja to Jungnang opened.

1990s On 16 November 1991, the section from Jungnang to Mangu opened. On 1 April 1994, the section from Mangu to Seongbuk was transferred to Seoul Metropolitan Subway Line 4. On 15 November 1995, the section from Jungnang to Deokso opened. On 20 March 1996, the section from Deokso to Paldang opened. On 27 December 1996, the section from Paldang to Yangpyeong opened. On 16 December 1997, the section from Yangpyeong to Yongmun opened. On 15 January 1999, the section from Cheongnyangni to Seongbuk was transferred to Seoul Subway Line 6. On 1 August 2000, the section from Yongsan to Seongbuk was transferred to the Gyeongui–Jungang Line.

2000s On 16 December 2005, the section from Seongbuk to Sangbong opened. On 20 December 2006, the section from Sangbong to Mangu opened. On 16 December 2007, the section from Mangu to Deokso opened. On 23 December 2008, the section from Deokso to Paldang opened. On 27 December 2008, the section from Paldang to Yongmun opened.

2010s On 21 December 2010, the section from Yongsan to Seongbuk was formally transferred to the Gyeongui–Jungang Line. On 1 October 2011, the section from Cheongnyangni to Sangbong was transferred to Seoul Subway Line 6. On 15 December 2012, the section from Sangbong to Mangu was transferred to Seoul Subway Line 6. On 27 December 2013, the section from Mangu to Deokso was transferred to Seoul Subway Line 6. On 27 December 2014, the section from Deokso to Paldang was transferred to Seoul Subway Line 6. On 27 December 2015, the section from Paldang to Yongmun was transferred to Seoul Subway Line 6. On 27 December 2016, the section from Yongmun to Jipyeong opened.

2020s On 30 December 2022, the section from Paldang to Yangpyeong was electrified. On 28 September 2023, the section from Yangpyeong to Yongmun was electrified. On 27 December 2024, the section from Yongmun to Jipyeong was electrified. On 30 June 2025, the section from Jipyeong to Wonju opened.

Main stopovers

South Korea section South Gyeongsang Province Namhae County - Sacheon - Jinju - Sancheong County - Hamyang County - Geochang County North Gyeongsang Province Gimcheon - Sangju - Mungyeong - Sangju - Mungyeong North Chungcheong Province Goesan County - Chungju - Eumseong County Gyeonggi Province Icheon - Yeoju - Icheon - Gwangju - Seongnam Seoul Songpa District - Jamsil Bridge - Gwangjin District - Jungnang District - Nowon District - Dobong District Gyeonggi Province Uijeongbu - Yangju - Dongducheon - Yeoncheon County Gangwon Province Cheorwon County

North Korea section Kangwon Province Pyonggang County - Ichon County Hwanghae Province Singye County - Koksan County South Pyongan Province Yangdok County - Maengsan County - Nyongwon County North Pyongan Province Huichon - Chosan County

Major intersections

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

South Gyeongsang Province NameIntersection and interchange are also included, as well as buildings and facilities in the surrounding area Hangul name Connection Location Note Chojeon IS 초전삼거리 National Route 19National Route 77(Namhae-daero)Namhae CountyMijo-myeonNational Route 77 overlapTerminus Gainpo Health Center 가인포보건진료소 Mulgeon-ri (Dokilma-eul)Samdong Elementary SchoolHanlyo Youth HostelGyeongnam Marine Science High SchoolNamsu Middle SchoolSamdong-myeon Welfare Center 물건리 (독일마을)삼동초등학교한려유스호스텔경남해양과학고등학교남수중학교삼동면종합복지회관Samdong-myeon Jijok IS 지족삼거리 Prefectural Route 1024(Sami-ro)National Route 77 overlapPrefectural Route 1024 overlap Changseon Bridge 창선교Changseon-myeon Jijok IS 지족삼거리 Prefectural Route 1024(Seobu-ro) Dangjeo Bridge 당저교 Prefectural Route 1024(Heungseon-ro)Changseon-ro 66beon-gilNational Route 77 overlap No name (이름 없음) Yuldo-ro Danhang IS 단항사거리 Prefectural Route 1024(Seobu-ro)Dongbu-daero 2964beon-gil Changseon Bridge 창선대교Sacheon CityDongseo-dong Neuk-do 늑도 Neukdo-gil Neukdo Bridge 늑도대교 Choyang-do 초양도 Choyang-gil Choyang Bridge 초양대교 Mogae-do 모개도 Samcheonpo Bridge 삼천포대교 Daebang IS 대방 교차로 National Route 77Prefectural Route 58(Gaksan-ro) National Route 77 ovelrapPrefectural Route 58, 1003 overlap Haean IS 해안 교차로 Noeul-gilPrefectural Route 58, 1003 overlap Siran IS 실안 교차로 Prefectural Route 1003(Haeangwangwang-ro) Gaksan Tunnel 각산터널 Prefectural Route 58 overlapApproximately 710m Namyang-dong Mochung IS 모충 교차로 Prefectural Route 1003(Haeangwangwang-ro) Prefectural Route 58 overlap Songpo 1 Bridge 송포1교 Songpo IS 송포 교차로 Prefectural Route 1003(Samcheonpodaegyo-ro)Songpogongdan-gil Prefectural Route 58, 1003 overlap Norye IS 노례 교차로 Miryong-gil Jumun IS 주문 교차로 Prefectural Route 58Prefectural Route 1003(Sacheondaegyo-ro)Yonghyeon-myeon Geummun IS 금문 교차로 Sicheong-roGeummun-gilBugok 3-gil Sacheon Chamber of Commerce & Industry 사천상공회의소 Songji IS 송지 교차로 Jangsong 1-gilJangsong 2-gil Onjeong IS 온정 교차로 Onjeong 1-gilOnjeong 2-gil Seonjin 2 IS(Singi IC Bridge) 선진2 교차로(신기IC교) Seonjingongwon-gil Seonjin 1 IS 선진1 교차로 Seokgeori-gilSeonjin-gil Jukcheon Bridge 죽천교Sanam-myeon Chojeon IS 초전 교차로 Prefectural Route 1001(Sanam-ro)(Gongdan 3-ro) Wolseong IS 월성 교차로 Gongdan 2-ro Yucheon IS 유천 교차로 Gongdan 1-ro Saju IS 사주 교차로 Jinsam-roYucheon-gilSacheon-eup Sacheon 2 Bridge 사천2교 Suseok 5-ri IS 수석5리사거리 Oksan-roHanggong-ro Suseok IS 수석삼거리 Prefectural Route 30Prefectural Route 1002(Sacheoneupseong-ro) Suseok IS 수석사거리 Jinsam-roGansan 2-gil Airport IS(Sacheon Airport) 공항삼거리(사천공항) Sacheon station(Closed) 사천역(폐역) Baechun IS 배춘삼거리 National Route 33(Sangjeong-daero)National Route 33 overlap Suseok Bridge 수석교 Chukdong-myeon No name (이름 없음) Seosam-ro National Route 33 overlap Ungye IS 운계 교차로 Prefectural Route 1002(Ungye-gil)National Route 33 overlapPrefectural Route 1002 overlap Sacheon IC IS 사천IC사거리 Prefectural Route 1002(Seosam-ro) Sacheon IC IS(Sacheon IC) 사천IC 교차로(사천 나들목) Namhae ExpresswayNational Route 33 overlap Yeha IS 예하 교차로 Gangju-gilJinju CityJeongchon-myeon Yeha 1 Overpass 예하1육교 Daechuk-gil Jeongchon IS 정촌 교차로 Jeongchon-ro Hwagae IS 화개 교차로 National Route 2(Jeongchon Bypass Road)Jinju-daeroNational Route 2, National Route 33 overlap Naedong IS 내동 교차로 National Route 2(Gyeongseo-daero)Naedong-myeon (South of Namgang Bridge) (남강대교 남단) Manggyeong-roNamgang BridgeNational Route 33 overlap Namgang Bridge(Huimang Bridge) 남강대교(희망교)Pyeonggeo-dong Huimang Bridge IS 희망교 교차로 Namgang-ro No name (이름 없음) Pyeonggeo-roSaepyeonggeo-roNational Route 33 overlap 10th Square IS 10호광장 교차로 Jinyangho-ro Daesa IS 대사 교차로 Seojang-daeroSunhwan-ro 676 beon-gilIhyeon-dong Nabulcheon Bridge 나불천교 Myeongseok IS 명석 교차로 National Route 33(Sunhwan-ro)Jinju-daero Myeongseok Tunnel 명석터널 Approximately 345mMyeongseok-myeon Usu IS 우수 교차로 Nabul-roPanmun-ro Daepyeong IS 대평진입로 Daepyeong-ro Oeyul IS 외율 교차로 Prefectural Route 1049(Seongcheol-ro)Oeyul-gil Donaegogae 도내고개Sancheong CountySinan-myeon Tohyeon Bridge 토현교 Hajeong IS 하정 교차로 National Route 20(Jirisan-daero) Hajeong Overpass 하정육교 Sanseong 2 Bridge 산성2교 Jungchongaljeon-ro 6.25 Veterans Memorial 6.25참전기념비 Simgeo Bridge 심거교 Hoam-roSancheong-daero 1212beon-gilSancheong-eup Oejeong IS 외정 교차로 Prefectural Route 60(Jeonggokcheokji-ro)Prefectural Route 60 overlap Oejeong Bridge 외정교 Muransil-ro Ssalgogae 쌀고개 Chinhwangyeong-ro 2720beon-gil Sancheong IS 산청 교차로 National Route 59Prefectural Route 60(Chinhwangyeong-ro)Prefectural Route 1026(Sansu-ro) Huitigogae 희티고개Obu-myeon Yangchon IS 양촌 교차로 Prefectural Route 1026(Odong-ro) Obu IS 오부 교차로 Sansu-roSaengcho-myeon Sinyeon Tunnel 신연터널 Approximately 320m Saengrim Bridge 생림교 Saengcho IS 생초 교차로 Sansu-ro North-bound only Saengcho Bridge 생초교 Goeup IS 고읍 교차로 Prefectural Route 1034(Gyeongho-ro) Prefectural Route 1034 overlap Goeup Bridge 고읍교 Saengcho Tunnel 생초터널 Prefectural Route 34 overlapApproximately 906mHamyang CountySudong-myeon Bontong Bridge 본통교 Prefectural Route 1034 overlap Gangjeong IS 강정 교차로 Sansu-ro Prefectural Route 1034 overlap Bontong IS 본통 교차로 Prefectural Route 1034(Cheonwangbong-ro) Prefectural Route 1034 overlap Daedong IS 대동 교차로 Sudong 1-gil Hwasan 1 BridgeHwasan 2 BridgeSudong Bridge 화산1교화산2교수동교 Sudong IS 수동 교차로 Sudong 1-gil Wonpyeong IS 원평사거리 Gongbae-gilSaneopdanji-gil Namgye IS 남계삼거리 Sudong 2-gil Gura IS 구라사거리 Jigokchangchon-gil Donggu IS 동구삼거리 Guradonggu-gil Namhyo IS 남효삼거리 Namhyojungbang-ro Naebaek IS 내백 교차로 Suan-gil Sangbaek IS 상백 교차로 Suan-gilAnui-myeon Anui IS 안의 교차로 National Route 24(Hamyang-ro)National Route 24 overlap Seokcheon IS 석천 교차로 Hwangma-ro Geumcheon IS 금천 교차로 Gwangpung-roAnuidojanggol-gil Gyobuk IS 교북 교차로 National Route 26(Yuksimnyeong-ro)National Route 24, National Route 26 overlap Yongchu IS 용추 교차로 Yongchugyegok-ro Samsan IS 삼산 교차로 Geoan-ro Baraegijae 바래기재Geochang CountyMari-myeon Samgeori IS 삼거리 교차로 Geoan-ro Jidong IS 지동 교차로 National Route 37(Geoan-ro) National Route 24, National Route 26, National Route 37 overlap Malheul IS 말흘 교차로 Geoan-ro National Route 24, National Route 26, National Route 37 overlap Jangbaek Tunnel 장백터널 National Route 24, National Route 26, National Route 37 overlapApproximately 639mGeochang-eup Geoyeol Tunnel 거열터널 National Route 24, National Route 26, National Route 37 overlapApproximately 544m Songjeong IS 송정 교차로 National Route 24National Route 26National Route 37(Geoham-daero)Geoan-ro National Route 24, National Route 26, National Route 37 overlap Songjeong Bridge 송정교 Gaji IS 가지 교차로 Geoyeol-ro 4-gil Jukdong IS 죽동 교차로 Dongbyeon-gilJinae 2-gil Jusang Tunnel 주상터널 Approximately 565mJusang-myeon Dopyeong IS 도평 교차로 Prefectural Route 1089(Jugok-ro) Jusang IS 주상 교차로 Dangdaegogae-gil Ungyang Elementary SchoolUngyang-myeon OfficeUngyang Bus stop 웅양초등학교웅양면사무소웅양정류소Ungyang-myeon Gangcheon IS 강천삼거리 Prefectural Route 1099(Uduryeong-ro) Gunam-ri 군암리 Goung-gil Baeteojae (Baetigogae) 배터재(배티고개) Continuation into North Gyeongsang Province

North Gyeongsang Province