A railroad trestle is a bridge that carries a railroad track over a river or body of water. It’s called a trestle because it’s made up of several separate beams that are called stringers, plus cross-beams on top.
The first wooden railroad trestles were built in the 1840s, and they were made of heavy timbers that were joined together by metal fasteners and nails. They were very strong and sturdy, but they had some disadvantages:
They weren’t as strong as stone bridges or concrete bridges. They could collapse under heavy loads, especially if they weren’t properly maintained.
They couldn’t be used over deep water because they would sink. Most wooden railroad trestles are built less than 30 feet (9 meters) above the ground or waterway below them. If you want to go higher than 30 feet (9 meters), then you need to build your own structure from scratch instead of using one that already exists or buy one from someone else who has already built theirs for you.
Last modified: September 18, 2022