A pipeline bridge is a bridge for running a pipeline over a river or another obstacle. Pipeline bridges for liquids and gases are, as a rule, only built when it is not possible to run the pipeline on a conventional bridge or under the river.[1][non-primary source needed] However, as it is more common to run pipelines for centralized heating systems overhead, for this application even small pipeline bridges are common.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Alaska_Pipeline_Bridge.jpg/220px-Alaska_Pipeline_Bridge.jpg)
Pipeline bridges may be made of steel, fiber reinforced polymer, reinforced concrete or similar materials.[2] They may vary in size and style depending on the size of the pipeline being run. As there is normally a steady flow in pipelines, they can be designed as suspension bridges. They may also be added to an existing bridge.[1] A pipeline bridge may be equipped with a walkway for maintenance purposes,[2] but for safety and security reasons, the walkway is usually not open to the public.[citation needed]
One of the world's longest pipeline bridges, built in 1970, is 1,040 meters long and crosses the Fuji River in Shizuoka Prefecture of Japan.[3] The highest at 393 m is Hegigio Gorge Pipeline Bridge in Papua New Guinea.
References
edit- ^ a b Designation of Energy Corridors on Federal Land in 11 Western States. United States Department of Energy. 21 February 2012. pp. 3-282–3-283. Retrieved 28 March 2023.
- ^ a b Kopáčik, Alojz; Marendić, Ante; Erdélyi, Ján; Kyrinovič, Peter; Paar, Rinaldo, eds. (19 October 2020). Contributions to International Conferences on Engineering Surveying: 8th INGEO International Conference on Engineering Surveying and 4th SIG Symposium on Engineering Geodesy. Springer International Publishing. p. 18. ISBN 9783030519537. Retrieved 28 March 2023.
- ^ Welding and Metal Fabrication. Louis Cassier Company. 1975. Retrieved 28 March 2023.