https://en.wikipedia.org/wiki/Saluda_Grade https://en.wikipedia.org/wiki/Saluda_Grade Until it was closed in 2001, this was the steepest standard-gauge section

https://en.wikipedia.org/wiki/Saluda_Grade https://en.wikipedia.org/wiki/Saluda_Grade Until it was closed in 2001, this was the steepest standard-gauge section of railway, reaching a maximum grade of 4.9%. By comparison, when traveling north on Interstate 5 out of Los Angeles, the Tejon Pass (also known as the Grapevine) hits a maximum grade of 6% (as per https://www.dangerousroads.org/north-america/usa/4366-tejon-pass.html https://www.dangerousroads.org/north-america/usa/4366-tejon-...).