Turbine manufacturers are making greater use of railways to save money and carbon emissions, as wind equipment factories proliferate across the US.
But as blades grow longer and towers taller, the industry is running up against the limits of what can pass under bridges and through tunnels.
BNSF Railway, one of the country's largest rail companies, has been shipping wind components for a decade, and it has been transporting oversize cargo such as plane fuselages and utility-scale transformers for even longer.
But
