Diagrams 7 Willamette River Swing Truss Railroad Bridge, Portland Oregon

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Willamette River Swing Truss Railroad Bridge, Portland Oregon SWING MOTOR AND BRAKE WHEEL SUPPORTS
SWING MOTOR AND BRAKE WHEEL SUPPORTS

Willamette River Swing Truss Railroad Bridge, Portland Oregon HAND TURNING DEVICE
HAND TURNING DEVICE

Willamette River Swing Truss Railroad Bridge, Portland Oregon OPERATING HOUSE
OPERATING HOUSE