If you’ve seen a railroad, you’ve seen railroad ties, the beams that brace the track crosswise from underneath. In the US they’re usually made of wood. But when listener Gordon Stewart went abroad, he noticed concrete ties on railroads.
This got him thinking. “Why don’t we use concrete ties in the states, having seen them in Europe and a number of other places and thinking it would be a lot of advantages to them?” he asked.
A story about European and American railroads
