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The oldest underwater rail tunnel in the world, crossing the Mersey in Liverpool: 1.21 km: 1881–1886 Severn Tunnel: Wales – England: One of the oldest underwater rail tunnels in the world: 7.01 km: 1873–1886 Blackwall Tunnel (western) London, England: The oldest underwater vehicular tunnel in the world, crossing the Thames in London: 1.35 ...
Puerto Rico Highway 22 (PR-22), also part of unsigned Interstate PR2, is an 84.3 km (52.4 mi) [3] long toll road on the north coast of Puerto Rico that connects the cities of San Juan and Hatillo. The road is also known as the José de Diego Expressway (Spanish: Expreso José de Diego ), and is part of unsigned Interstate PR-2.
Submerged floating tunnels can be anchored to the seafloor (left) or suspended from a pontoon (right) A submerged floating tunnel (SFT), also known as submerged floating tube bridge (SFTB), suspended tunnel, or Archimedes bridge, is a proposed design for a tunnel that floats in water, supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes' principle).
Cross-Harbour Tunnel was completely suspended during protest in November 2019. The Hong Kong government used the operator model "Build Operate Transfer", or "BOT", for the implementation of the tunnel project; Financing and construction was the responsibility of a private enterprise, which was granted a concession to operate and collect tolls for 30 years.
The Posey and Webster Street Tubes are two parallel underwater tunnels connecting the cities of Oakland and Alameda, California, running beneath the Oakland Estuary. Both are immersed tubes, constructed by sinking precast concrete segments to a trench in the Estuary floor, then sealing them together to create a tunnel. The Posey Tube, completed ...
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The Tokyo Bay Aqua-Line (東京湾 アクアライン, Tōkyō-wan Akua-rain [9]), also known as the Trans-Tokyo Bay Expressway, is an expressway that is mainly made up of a bridge–tunnel combination across Tokyo Bay in Japan.
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