Back in 2007, our US subsidiary Flatiron developed a new bridge building technique for use in its Highway 17 Bypass project in North Carolina. Its goal was to minimize environmental disturbance. A gantry was built from which piles can be driven into the ground, precast road segments laid in place, and girders erected. As soon as one span is done, the gantry moves forward. It eliminates the need for heavy construction vehicles, minimizing environmental impacts. This “assembly line” technique makes it possible to build bridges from above.