| Country: | KOR |
| Type: | Seoul UEX |
| Route: | 70 |
| Alternate Name: | Gangbyeon Expressway 강변북로 |
| Length Km: | 37.37 |
| Established: | 1969 |
| Direction A: | West |
| Terminus A: | Mapo, Seoul(Gayang Bridge) Jayu-ro |
| Junction: | National Route 1 Seobu Urban Expressway Naebu Expressway National Route 6 National Route 46 Dongbu Urban Expressway National Route 3 National Route 43 Seoul Ring Expressway |
| Direction B: | East |
| Terminus B: | Namyangju, Gyeonggi(Jigeum Jct.) National Route 6 |
| Hangul: | 강변북로 |
| Hanja: | 江邊北路 |
| Mr: | Kangbyŏnbungno |
| Rr: | Gangbyeonbungno |
| Lk: | Riverside Northern Road |
The Gangbyeon Expressway (Korean: 강변북로) is an eight-lane highway located in Seoul, South Korea. It is part of National Route 46 and National Route 77. This route connects Seoul to Namyangju, with a total length of 37.37km (23.22miles). The highway is directly connected with the Jayu Motorway (자유로) in the border city located on the Gayang Bridge. The Mapo Bridge–Namyangju section has been designated as National Route 46, while the Yanghwa Bridge–Goyang section is specified as National Route 77. The highway is the main arterial road that connects northern Seoul with satellite cities such as Goyang, Paju, and Namyangju.
Construction of the expressway began in 1969, and it opened in 1972. In 1985, it was extended to Haengju Bridge and Cheonho Bridge. At the time the road was completed, it had sections with two, three, and four lanes.
After rapid economic growth and the 1988 Summer Olympics the road was the site of chronic traffic jams. An expansion project began in 1989 and was completed in 1998.
In 2012, Seoul City was expanded and road improvement projects were proposed to the Gangbyeon Expressway, including the underground relocation of the road construction.
| No. | Name | Korean Name | Hanja Name | Connections | Notes | Location | |
|---|---|---|---|---|---|---|---|
| Connected directly with National Route 77(Jayu-ro)(자유로) | |||||||
| 6 | 가양대교북단 | 加陽大橋 | Gayang-daero (가양대로) Hwagok-ro(화곡로) | Highway start | Seoul | ||
| 7 | Nanji Park IC (World Cup Bridge) | 난지공원IC (월드컵대교북단) | 蘭芝公園交叉路 (월드컵大橋) | Jeungsan-ro (증산로) World Cup Bridge (월드컵대교) | |||
| 8 | Seongsan JC (Seongsan Bridge) | 성산분기점 (성산대교북단) | 城山分岐點 (城山大橋) | National Route 1 (Seobu Urban Expressway) National Route 48 Naebu Expressway (내부순환로) Seoul World Cup Stadium Mapo District Office | |||
| 9 | 양화대교북단 | 楊花大橋 | |||||
| 10 | 서강대교북단 | 西江大橋 | |||||
| 11 | 마포대교북단 | 麻浦大橋 | |||||
| 12 | 원효대교북단 | 元曉大橋 | Yongsan | ||||
| 13 | 한강대교북단 | 漢江大橋 | |||||
| 14 | 동작대교북단 | 銅雀大橋 | Namyangju-bound only | ||||
| 15 | 반포대교북단 | 盤浦大橋 | Banpo-daero (반포대로) | ||||
| 16 | 한남대교북단 | 漢南大橋 | |||||
| 17 | Seongsu JC (Dongbu Expway Entrance) | 성수분기점 (동부간선도로입구) | 聖水分岐點 (東部幹線道路入口) | Dongbu Urban Expressway (동부간선도로) | Seongdong | ||
| 18 | 성수대교북단 | 聖水大橋 | Eonju-ro (언주로) Gosanja-ro (고산자로) | ||||
| 19 | 영동대교북단 | 永東大橋 | National Route 47 Yeongdongdaero (영동대로) Dosandaero (도산대로) | Gwangjin | |||
| 20 | 청담대교북단 | 淸潭大橋 | |||||
| 21 | 잠실대교북단 | 蠶室大橋 | |||||
| 22 | 잠실철교북단 | 蠶室鐵橋 | Ilsan-bound only | ||||
| 23 | 올림픽대교북단 | 올림픽大橋 | Gangdong-daero(강동대로) | ||||
| 24 | 천호대교북단 | 千戶大橋 | |||||
| 25 | 광진교램프 | 光津橋램프 | |||||
| IC | 아천나들목 | 峨川나들목 | Gyeonggi | ||||
| IC | 남구리나들목 | 南九里나들목 | |||||
| IC | Topyeong IC (Gangdong Bridge) | 토평나들목 | 土坪나들목 | ||||
| IC | 수석나들목 | 水石나들목 | Namyangju | ||||
| Jigeum Jct. | 지금삼거리 | 芝錦交叉路 | Highway end | ||||