Introduction The construction industry is undergoing a significant transformation with the introduction of 3D printing technology. Among its many applications, 3D printing a steel bridge stands out as one of the most innovative and promising advancements.

The advent of 3D printing technology has revolutionized various industries, including construction and infrastructure. One of the most exciting applications of this technology is the creation of large-scale structures, such as bridges. This article explores the intricate process of how a 12m long steel bridge​ is 3D printed, detailing the materials, techniques, and implications for future construction.