Cross-sea traffic ways are vehicle or railroad traffic ways across the sea. Such traffic ways could include bridges or tunnels.

Sea bridges

Existing sea bridges

* Anping Bridge (China) * Donghai Bridge (China) * Haicang Bridge (China) * Hangzhou Bay Bridge (China) * Hong Kong–Zhuhai–Macau Bridge (China) * Jiangnanshan Bridge (China) * Jiaozhou Bay Bridge and Jiaozhou Bay Tunnel (China) *

Jintang Bridge Jintang Bridge () is a highway bridge with a cable-stayed bridge portion, built in Zhejiang, China on the Zhoushan Archipelago, the largest offshore island group in China. It is the longest bridge in Zhoushan Trans-oceanic Bridges with a length o ...

(China) *

Pingtan Strait Road-Rail Bridge Pingtan may refer to: * Suzhou pingtan (), a variety of traditional Chinese storytelling Places in China * Pingtan County (), Fuzhou, Fujian * Pingtan Island (), main island of Pingtan County, Fuzhou * Pingtan Township (), Tongdao Dong Autonomo ...

(China) *

Xiamen Zhangzhou Bridge The Xiamen Zhangzhou Bridge is a bridge across the Jiulong River estuary as the river enters Xiamen Bay. The bridge's main cable-stayed bridge span is long, the ninth longest in the world. The cable stayed section is supported by two high tow ...

(China) * Xihoumen Bridge (China) * Zhanjiang Bay Bridge (China) * Zhujiajian Strait Bridge (China) * Oresund Bridge (Denmark-Sweden) * Great Belt Fixed Link (Denmark) * King Fahd Causeway (Saudi Arabia-Bahrain) * Bandra-Worli Sea Link (India) *

Pamban Bridge Pamban Bridge is a railway bridge that connects the town of Mandapam in mainland India with Rameswaram on Pamban Island. Opened on 24 February 1914, it was India's first sea bridge, and was the longest sea bridge in India until the opening of t ...

(India) * Mumbai Trans Harbour Link (India) * Okha–Beyt Dwarka Signature Bridge (India) * China Maldives Friendship Bridge ( Maldives) * Chesapeake Bay Bridge-Tunnel (United States) * Hampton Roads Bridge-Tunnel (United States) * Monitor-Merrimac Memorial Bridge-Tunnel (United States) *

Golden Gate Bridge The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the strait connecting San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, California—the northern tip of the San Francisco Pen ...

(United States) * Overseas Highway (United States) * Confederation Bridge (Canada) * Tokyo Bay Aqua-Line (Japan) * Seikan Tunnel (Japan) *

Channel Tunnel The Channel Tunnel (french: Tunnel sous la Manche), also known as the Chunnel, is a railway tunnel that connects Folkestone (Kent, England, UK) with Coquelles ( Hauts-de-France, France) beneath the English Channel at the Strait of Dover. ...

(United Kingdom-France) *

Michael Davitt Bridge The Michael Davitt Bridge () is a swing bridge in County Mayo, Ireland that crosses from Achill Island to the Mainland. History The plan for a bridge to connect Achill Island to the Corraun Peninsula was considered in the early 1880s. A Mayo Co ...

(Ireland- Achill Island) * Crimean Bridge (Russian-occupied Ukraine) * Pelješac bridge ( Croatia)

Sea bridges under construction

* Shenzhen–Zhongshan Bridge (China) * Mumbai Trans Harbour Link (India)

Planned or proposed sea bridges

* Bohai Bay Bridge (China) *

Gibraltar Bridge The Strait of Gibraltar crossing is a hypothetical bridge or tunnel spanning the Strait of Gibraltar (about 14 km or 9 miles at its narrowest point) that would connect Europe and Africa. The governments of Spain and Morocco appointed a joi ...

(Spain- Morocco) *

Strait of Messina Bridge The Strait of Messina Bridge is a long-planned suspension bridge across the Strait of Messina, that connects the cities of Messina’s Torre Faro and the port city of Villa San Giovanni in Calabria. While the bridge has been proposed since ancie ...

(Italy) *

Bridge of the Horns The Bridge of the Horns ( ar, جسر القرن الإفريقي, translit=Jisr al-Qarn al-ʾIfriqiyy, ) is a proposed construction project to build a bridge between the coasts of Djibouti and Yemen, across the Bab-el-Mandeb, between the Red Sea ...

( Djibouti- Yemen) * Bering Strait bridge (Russia-United States) *

Sunda Strait Bridge The Sunda Strait Bridge ( id, Jembatan Selat Sunda, ''JSS'', ''Jembatan Selsun'', sometimes referred to in English-language reports as the ''SSB'', Sundanese: ') was a planned road and railway megaproject between the two large Indonesian island ...

( Indonesia) * British Isles Connectors (Great Britain-Ireland) * Qatar Bahrain Causeway bridge ( Qatar-Bahrain)

Sea tunnels

Existing sea tunnels

Dalian Bay Subsea Tunnel Dalian () is a major sub-provincial port city in Liaoning province, People's Republic of China, and is Liaoning's second largest city (after the provincial capital Shenyang) and the third-most populous city of Northeast China. Located on th ...

(China) *

Qingdao Jiaozhou Bay tunnel Qingdao Jiaozhou Bay Tunnel is an under-sea road tunnel located in Qingdao, Shandong Province in eastern China. It crosses underneath Jiaozhou Bay, connecting Huangdao District to the south with Shinan District in the north at the narrow entrance ...

(China) *

Xiamen XiangAn Tunnel Xiamen ( , ; ), also known as Amoy (, from Hokkien pronunciation ), is a sub-provincial city in southeastern Fujian, People's Republic of China, beside the Taiwan Strait. It is divided into six District of the People's Republic of China, ...

(China) * Xiamen-Haicang Undersea Tunnel (China) *

(France-United Kingdom) * Seikan Tunnel (Japan)

Sea tunnels under construction

* The second Jiaozhou Bay Subsea Tunnel (China) * Shantou SuAi Bay Subsea Tunnel (China) * Shenzhen Mawan Cross-Sea Tunnel (China) *

Xidian Bay Subsea Tunnel Xidian may refer to: * Xidian, Zhejiang, a town in Ninghai County, Zhejiang, China * Xidian University Xidian University () is a public research university in Xi'an, Shaanxi, China, that is administered by the Ministry of Education of China. ...

(China) *

Fehmarn Belt Fixed Link The Fehmarn Belt fixed link ( da, Femern Bælt-forbindelsen, german: Fehmarnbelt-Querung) or Fehmarn Belt tunnel is an under-construction immersed tunnel, which will connect the Danish island of Lolland with the German island of Fehmarn, cross ...

Planned or proposed sea tunnels

* Bohai Strait tunnel (China) *

Qiongzhou Strait Tunnel Qiongzhou may refer to: * Qiongzhou Strait (琼州海峡), Chinese strait between Leizhou Peninsula, Guangdong and Hainan * Qiongzhou Bridge (琼州大桥), a bridge over Nandu River in Haikou, Hainan, China *Qiongzhou University (琼州学院), a ...

(China) * Taiwan Strait Tunnel Project (China)

Traffic dams

* Väinatamm ( Saaremaa- Muhu)

References

{{Reflist Transport buildings and structures