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Timber Trestles and Railroad Bridges:
During the late 19th and early 20th centuries, timber railroad bridges were a common sight across North America. These wooden structures played a crucial role in connecting communities and industries by spanning rivers, canyons, and valleys.

Timber trestles came in two primary forms:

Pile Trestles: These consisted of bents spaced 12 to 16 feet apart, with round timber poles pounded straight into the ground. The uneven posts supported stringers and planks for the rail.
Framed Bents: Used for higher trestles, these frame bents used square timbers and rested on mud sills or sub sills acting as foundations. They were built in a series of “stories.”
Some of the most remarkable timber trestles were up to 200 feet tall and stretched for a quarter-mile. The Camas Prairie Railroad in northern Idaho featured many such trestles across the rolling Camas Prairie and in the challenging Lapwai Canyon1.


Tunnel #1 on the B&O Main Line:
An early 1900s photo captures Tunnel #1 on the Baltimore and Ohio (B&O) main line between Bridgeport and Clarksburg, West Virginia. Known as Carr’s or Lodgeville Tunnel, it remained active until 1952, when it was replaced by a double-track bore with higher clearance2.
Oregon Loggers and Spanish Flu:


In Oregon during the early 1900s:
Loggers posed on massive tree stumps, showcasing the scale of their work.
Children stood near political signs in front of the Portland and OK coffee houses.
The Spanish Flu pandemic also left its mark on Portland3.