Three-dimensional tunnel modeling is a cornerstone of modern infrastructure development. With the complexity, scale, and risks involved in underground construction, a 3D tunnel model empowers engineers and stakeholders to plan, visualize, and optimize every stage. From alignment and cross-section design to construction and maintenance. Tunnels come in many forms, from cut-and-cover to bored structures, each with unique geometric and construction challenges. Circular tunnels, in particular, requi