List Of Bridge–tunnels
List of bridge–tunnels: List See also *Transcontinental railroads have many bridge–tunnels. *Intercontinental and transoceanic fixed links A fixed link or fixed crossing is a persistent, unbroken road or rail connection across water that uses some combination of bridges, tunnels, and causeways and does not involve intermittent connections such as drawbridges or ferries. A bridge–tu ... {{DEFAULTSORT:List of bridge-tunnels * *Tunnel *Bridge ...
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Bridge–tunnel
A bridge–tunnel is a persistent, unbroken road or rail connection across water that uses a combination of bridges and tunnels, and sometimes causeways, and does not involve intermittent connections such as drawbridges or ferries. Bridge–tunnels are a form of fixed link or fixed crossing which replaces ferry service. Fixed links are often, but not necessarily, intercontinental links between continents or transoceanic links to offshore islands. Tunnels and bridge–tunnels For water crossings, a tunnel is generally more costly to construct than a bridge. However, navigational considerations at some locations may limit the use of high bridges or drawbridge spans when crossing shipping channels, necessitating the use of a tunnel. Examples of such tunnels include the Downtown Tunnel and Midtown Tunnel under the Elizabeth River between Norfolk and Portsmouth, Virginia in the United States, the George Massey Tunnel in Greater Vancouver, Canada Canada is a country in No ...
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