Define, analyze and rectify each span, every segment. Reduce errors, guarantee total precision and facilitate the modular and industrial construction of bridges and viaducts: SeCAC Software. eCAC, a software program developed by ACCIONA, assists technicians who control the geometry of each new bridge segment on the computer. To do so, the program uses an infallible mold: the previously cast segment. The aim is to ensure the most precise match possible between the two. When this 3D model is