IndefiniteBen, 1 year ago

This is Crib trestle bridge of the Columbia & Nehalem Valley Railroad at the McBride Creek, circa 1905. A source: vintag.es/…/vintage-photographs-of-incredible.htm…

Which says:

Early timber bridges had their drawbacks. Untreated lumber only lasted about 20 years and locomotives could easily cause the wood to catch fire. Collapses - rare today - were a regular occurrence on logging railroads and there are numerous accounts of train crews that regularly hopped off their slow moving locomotive as it approached a high, untrustworthy trestle, allowing it to cross before they would then run across the bridge and jump back on.

But that’s about log bridges generally, not this one. Here’s an unhelpful wiki page: en.wikipedia.org/wiki/Crib_bridge