Whether you're building a model for a school project or trying to understand how full-scale arch bridges come together, the process follows the same core principles: build strong foundations, construct a temporary support frame, lay the arch from both sides toward the center, and. Whether you're building a model for a school project or trying to understand how full-scale arch bridges come together, the process follows the same core principles: build strong foundations, construct a temporary support frame, lay the arch from both sides toward the center, and. Concrete arch bridges are efficient structures that employ axial compression to handle load transfer to foundations. Two main types are prevalent: standard precast arches and bespoke arches. These. An arch bridge works by transferring weight along its curved shape and down into solid supports at each end, making it one of the strongest and oldest bridge designs in existence. By transferring the compressive forces through the arch rib or barrels, they are transferred to the base of the arch as outward. Today, there are two primary methods used in the construction of arch bridges: the Cast-in-Situ Free Cantilever Method and the Slip-Formed Sections Method. A viaduct (a long bridge) may be made from a series of arches, although other, more economical. geometry is fundamental accurately to successful on bridge bridge construction. and detailed Detailed drawings superstructures to engineers and technicia at a specific substructures. Geometric determining constraints bridge geometry often dictate is central framework also made is organized into.