Northern Pacific 1612 hauls the eastbound (south) Darrington Logger across the Stillaguamish River bridge at Arlington, Washington, on May 25, 1955. Photo by J.M. Fredrickson. Other Subject Classes: steam locomotive, freight train, truss bridge.

Northern Pacific 5407, an Electro-Motive Division FT, hauls scheduled freight number 675 across the Stillaguamish River bridge north (railroad west) of Arlington, Washington, in 1955. Photo by J.M. Fredrickson. Other Subject Classes: diesel locomotive, freight train, truss bridge.

Northern Pacific bridge 61.1 at Arlington, Washington. Looking northeast at bridge 61.1 over Stillaguamish River; Washington State Highway 9 to the left; photograph sequence TRWahl0213, 0247-0249. Other subject categories: Bridge-Truss, River, Structure

Northern Pacific bridge 61.1 at Arlington, Washington. Close-up of pier of bridge 61.1 over Stillaguamish River; photograph sequence TRWahl0213, 0247-0249. Other subject categories: Bridge-Plate Girder, pier, Structure

Northern Pacific bridge 61.1 at Arlington, Washington looking northwest over Stillaguamish River; Washington State Highway 9 to the left. Other subject categories: Bridge-Truss, Highway, Highway, Structure

Northern Pacific bridge 61.1 at Arlington, Washington. Close-up of pier of bridge 61.1 over Stillaguamish River; photograph sequence TRWahl0213, 0247-0249. Other subject categories: Bridge-Truss, pier, Structure

Northern Pacific bridge 61.1 at Arlington, Washington. Looking northeast at bridge 61.1 over Stillaguamish River; Washington State Highway 9 to the left; photograph sequence TRWahl0213, 0247-0249. Other subject categories: Bridge-Truss, Right-of-Way, Structure