Abstract: An automated pipeline-construction system and method for constructing a pipeline and laying constructed pipeline in various terrain conditions. The system has one or more pipeline-racking vehicles arranged in series for storing a plurality of pipeline joints, and a self-propelled pipeline-construction vehicle behind the pipeline-racking vehicles for receiving pipeline joints one-by-one therefrom and automatically coupling each received pipeline joint to the constructed pipeline through a pipeline construction and deployment process. A computing structure controls the pipeline-racking vehicles and pipeline-construction vehicle to align them at least laterally and to synchronously move forward for deploying the constructed pipeline.