A train-view of a flyover at Zoo Interlocking in Philadelphia. Brian Solomon Question: Where are some other mainline flyovers in the U.S.? — Frank Klos, San Diego, Calif. Answer: A flyover is grade-separated track arrangement used to keep busy lines fluid by avoiding the need for conflicting crossover movements, often built in conjunction with junctions […]
Ask Trains: Where are major flyovers on U.S. railroads?
