Snohomish Rail Bridge

This abandoned rail bridge over the Snohomish River, in Snohomish WA, used to be a swing bridge allowing very tall river traffic to pass.  In the overhead view, the closest concrete pier is the point of rotation, and there was a house for the bridge operator set under the tracks.

It was built by the American Bridge Company of New York in 1911.  The swing span was welded shut some time ago, as the current tracks were laid without a gap.  And then the track was abandoned to its present state.