The Seohaean Expressway () is a freeway in South Korea, connecting Mokpo to Gunsan, Dangjin, and Seoul.
It is numbered 15. The entire length from Seoul to Mokpo is 345 km and the posted speed limit is 110 km/h, enforced primarily by speed cameras. It is connected of Seohae Grand Bridge in Pyeongtaek to Dangjin.
The branch expressways of the Seohaean Expressway are Seocheon–Gongju Expressway and Pyeongtaek–Siheung Expressway.
Typical facilities of this expressway is Seohae Bridge(Korean: 서해대교; Seohae Daegyo) which the total length of 7.3 km linking the Pyeongtaek(Gyeonggi Province) and Dangjin(Chungnam Province). The bridge is the third long bridge in the Republic of Korea.
The highway is a major highway linking the Seohaean Region(서해안권) for the first north–south axis (남북 제1축), the road through the South Jeolla Province, North Jeolla Province, South Chungcheong Province, Gyeonggi Province.
History December 1991 – Construction begin May 1993 – Construction begin of Seohae Grand Bridge 6 July 1994 – Seoul–Ansan segment opened to traffic. 17 December 1996 – Ansan–Pyeongtaek segment opened to traffic. 25 August 1998 – Mokpo–Muan segment opened to traffic. 30 October 1998 – Gunsan–Seocheon segment opened to traffic. 10 November 2000 – Seohae Grand Bridge segment opened to traffic. and Pyeongtaek–Dangjin segment opened to traffic. 27 September 2001 – Dangjin–Seocheon segment opened to traffic. 21 December 2001 – The last segment, Gunsan–Muan segment opened to traffic. 30 July 2010 – Work begins to widen to 8 lanes in Ansan–Iljik Junction. 23 November 2011 – Jungnim Junction opened to traffic. October 2014 – Seohae Bridge – W. Pyeongtaek Junction Section (10.3 km) road expansion started construction. November 2014 – The 10-lane expansion of the Ansan JCT – Jonam JCT (2.9 km) section was completed. June 2015 – The 10-lane expansion of the Jonam JCT – Mokgam IC (3.2 km) section was completed. 23 December 2015 – The 10-lane expansion of the Mokgam IC – Iljik JCT (3.8 km) section was completed. 3 July 2016 – Soha Junction opened to traffic.
Compositions
Lanes Mokpo IC – Dangjin JC, Iljik JC-West Seoul End: 4 Dangjin JC – Bibong IC, Maesong IC-Ansan JC, Jonam JC–Mokgam IC: 6 Mokgam IC – Iljik JC, Bibong IC – Maesong IC, West Seoul TG-Jonam JC: 8 Ansan-Iljik, Yangjae-Giheung, unjung Bridge and Seoul Ring Road (Rigid Pavement) 130 km JC – : 10
Length
Speed limits Jungnim JC – Maesong IC : Maesong IC – Seoul(Geumcheon) : Mokpo – Jungnim JC :
Interchange lists
ProvinceLocationkmExitNameKorean nameHanja nameConnectionsNotesConnected directly to Seobu Ganseondoro (서부간선도로)SeoulGeumcheon0.65340.81Seoul서울 종점서울 終點Seobu Urban Expressway4.20340.1638Geumcheon IC금천나들목衿川나들목National Route 1 Doksan Station ( Line 1)Seoul-bound enter onlyMokpo-bound exit only37Soha JC소하분기점所下分岐點 Suwon-Munsan ExpresswayGangnam BeltwayGangnam-bound onlyMokpo-bound onlyGyeonggiGwangmyeong2.67335.9636Iljik JC일직분기점日直分岐點 2nd Gyeongin ExpresswayAnyang3.15333.2935Gwangmyeong Stn. IC광명역나들목光明驛나들목Ori-ro KTX Gwangmyeong Stn.Siheung3.16332.1434Mokgam IC목감나들목牧甘나들목 National Route 42 Suwon–Munsan Expressway 3rd Gyeongin HighwaySAMokgam SA목감간이휴게소牧甘簡易休憩所Seoul-bound only2.89328.9833Jonam JC조남분기점鳥南分岐點 Capital Region First Ring ExpresswayAnsanTGW. Seoul TG서서울요금소西서울料金所Main Tollgate5.12326.0932Ansan JC안산분기점安山分岐點 Yeongdong Expressway3.80320.9731-1Palgok JC팔곡분기점八谷分岐點 Yeongdong ExpresswayMokpo-bound enter onlyGangneung-bound exit onlyHwaseong4.02317.1731Maesong IC매송나들목梅松나들목Local Route 84SAMaesong SA매송휴게소梅松休憩所13.62313.1530Bibong IC비봉나들목飛鳳나들목 National Route 39SAHwaseong SA화성휴게소華城休憩所29-1Paltan JC팔탄분기점八灘分岐點 Capital Region Second Ring Expressway7.82299.5329Baran IC발안나들목發安나들목 National Route 39Pyeongtaek6.53291.7128W Pyeongtaek JC서평택분기점西平澤分岐點 Pyeongtaek–Jecheon Expressway Pyeongtaek-Siheung Expressway12.64285.1827W Pyeongtaek IC서평택나들목西平澤나들목 National Route 8227-1Poseung JC포승분기점浦升分岐點 Iksan–Pyeongtaek Expressway BranchBRSeohae Bridge서해대교西海大橋ChungnamDangjinSAHaengdam Island SA(Ocean Park Resort)행담도휴게소行淡島休憩所In the Seohae Grand Bridge8.07272.5426Songak IC송악나들목松岳나들목 National Route 38Dangjin Steelworks9.39264.4725Dangjin IC당진나들목唐津나들목 National Route 346.56255.0824Dangjin JC당진분기점唐津分岐點 Dangjin-Yeongdeok ExpresswaySeosan10.78248.5223Seosan IC서산나들목西山나들목 National Route 32SASeosan SA서산휴게소西山休憩所13.68237.8022Haemi IC해미나들목海美나들목 National Route 45HaemieupseongHongseong10.80224.1221Hongseong IC홍성나들목洪城나들목 National Route 29SAHongseong SA홍성휴게소洪城休憩所19.72213.3220Gwangcheon IC광천나들목廣川나들목Local Route 96BoryeongSADaecheon SA대천휴게소大川休憩所11.99193.6019Daecheon IC대천나들목大川나들목 National Route 36Daecheon Beach8.71181.6118Muchangpo IC무창포나들목武昌浦나들목Local Route 606Seocheon11.91172.9017Chunjangdae IC춘장대나들목春長臺나들목 National Route 21SASeocheon SA서천휴게소舒川休憩所8.98160.9916Seocheon IC서천나들목舒川나들목 National Route 46.23152.0115E Seocheon JC동서천분기점東舒川分岐點 Seocheon-Gongju ExpresswayJeonbukGunsanSAGunsan SA군산휴게소群山休憩所Seoul-bound only8.40145.7814Gunsan IC군산나들목群山나들목 National Route 21SAGunsan SA군산휴게소群山休憩所Mokpo-bound only12.55137.3813E Gunsan IC동군산나들목東群山나들목 National Route 21 National Route 26 National Route 29Gimje12-1Gimje JC김제 분기점金堤分岐點 Saemangeum-Pohang Expressway13.93124.8312W Gimje IC서김제나들목西金堤나들목 National Route 29Buan16.18110.9011Buan IC부안나들목扶安나들목 National Route 309.8794.7210Julpo IC줄포나들목茁浦나들목Local Route 710Gochang7.9184.859Seonunsan IC선운산나들목禪雲山나들목 National Route 22SeonunsaSAGochang Goindol SA고창고인돌휴게소高敞고인돌休憩所2.7476.948Gochang IC고창나들목高敞나들목Local Route 1516.0674.207Gochang JC고창분기점高敞分岐點 Gochang-Damyang ExpresswaySADaesan SA대산휴게소大山休憩所Seoul-bound only (temporary rest area, no gas station)JeonnamYeonggwang24.3358.146Yeonggwang IC영광나들목靈光나들목 National Route 235-1 SABulgapsan Yeonggwang SA부안고려청자휴게소Muan-bound only (temporary rest area, no gas station)Hi-pass exclusive interchangeHampyeongSAHampyeong-cheonji SA함평천지휴게소咸平天地休憩所Seoul-bound only7.8133.815Hampyeong IC함평나들목咸平나들목 National Route 23SAHampyeong-cheonji SA함평천지휴게소咸平天地休憩所Mokpo-bound only2.4626.004Hampyeong JC함평분기점咸平分岐點 Muan-Gwangju ExpresswayMuan International AirportMuan17.2823.543Muan IC무안나들목務安나들목National Route 1TGMokpo TG목포요금소木浦料金所Main Tollgate2.106.262Illo IC일로나들목一老나들목Local Route 8153.904.16Jungnim JC죽림분기점竹林分岐點 Namhae Expressway(Mokpo–Gwangyang) National Route 2Jeonnam Provincial OfficeMokpo AirportMokpo0.260.261Mokpo IC목포나들목木浦나들목National Route 1 (Yeongsan-ro)–0.0Mokpo목포 시점木浦 始點National Route 1 National Route 2Mokpo BridgeAphae BridgeConnected directly to National Route 1, National Route 2 (Goha-daero) (고하대로)
Events MBC's Entertainment program, Infinite Challenge held a Seohaean Expressway Festival in Haengdam Island Service area in June 2011.
See also Roads and expressways in South Korea Transportation in South Korea
External links KEC (Korea Expressway Corporation) MOLIT South Korean Government Transport Department