A bridge designed for carrying fluids such as water, oil, and gas when it is not possible to run the pipeline on a conventional bridge or under the river?

• A. Pipeline Bridges
• B. Conveyor Bridges
• C. Temporary Bridges
• D. Keystone

Answer: (A)

When a pipeline carrying fluids cannot be laid on a standard bridge deck or buried under a river, a pipeline bridge is used to carry the pipe across the obstacle. This type of bridge is specially designed to support the weight of the pipe and its contents, as well as the internal pressure and temperature changes that fluids experience. It includes features to handle expansion and contraction, provide leak containment and inspection access, and protect against corrosion. The pipe may be laid on a dedicated pipe rack or enclosed in troughs on the bridge, with expansion joints and restraints to keep the alignment stable over time. This focus on carrying fluid conduits across gaps distinguishes it from other bridge uses, such as conveyors or temporary structures, or from architectural terms like a keystone, which aren’t about pipelines.