Wind Turbine Blade Transportation ChallengesLundstrom, an aerospace engineer, founded Radia nine years ago after coming across a plea for help from wind-turbine manufacturers. In the United States, for example, the height of interstate highway overpasses—typically 4.9 meters (16 feet)—won’t allow for bigger turbine blades to pass. Some regions in China don’t have the same road constraints, allowing extralarge onshore wind turbines to be built there. The WindRunner WindRunner required unique design specifications to accommodate the ultra-long length of the wind turbine blades it will carry. Still, the fundamental question remains: Is increasing the size of onshore wind turbines by 50 percent worth the trouble?