Pipeline bridge
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. However, as it is more common to run pipelines for centralized heating systems overhead, for this application even small pipeline bridges are common.
A pipeline bridge carrying the Trans-Alaska Pipeline
Types
As there is normally a steady flow in pipelines, they can be designed as suspension bridges.
Walkways
A pipeline bridge may be equipped with a walkway for maintenance purposes but, in most cases, this is not open for public access for safety and security reasons.
References
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