It’s a race against the clock. In Montreal, some of the world’s most skilled civil engineers are working to complete one of North America’s largest, most complicated bridge construction projects in record time. With projected yearly traffic of 50 million vehicles, the new Champlain Bridge will span the majestic St. Lawrence River. Normally, a structure of this type would take five or six years to build; the team has set itself the task of completing this one in three-and-a-half years. The bridge has a complex, ambitious design, and its builders must allow marine traffic through the St. Lawrence Seaway to continue unimpeded at all times. Follow the many challenges of an architectural miracle in the making in this documentary chronicling daily progress on the project.