Northern Pacific bridges number 1 and 3 at Martin, Washington Territory, 1887. Trestles at east end of Stampede Pass switchback. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback

Northern Pacific bridge at Deming, Washington looking northwest from Washington State Highway 9 bridge to bridge 110 over Nooksack River; photograph sequence TRWahl0393-0390. Other subject categories: Bridge-Truss, Bridge-Plate Girder, Structure, River

Northern Pacific bridge at Bellingham, Washington. Looking northwest across Great Northern main track at Northern Pacific main track on trestle with log dump and former E. K. Wood Lumber Company structures; photograph sequence TRWahl0871, 1075. Other subject categories: Bridge-Trestle, Logs, Structure, Piling

Northern Pacific bridge 19 at Bellingham, Washington. bridge 19 over Whatcom Creek on main track near Albers Feeds. Other subject categories: Bridge-Trestle, , Structure

Northern Pacific bridge number 9 at Stampede Pass, Washington Territory, 1887. Low timber trestle on switchback in snow. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback

Northern Pacific bridge number 8 at Stampede Pass, Washington Territory, 1887. Timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 8 at Stampede Pass, Washington Territory, 1887. Low timber trestle on switchback in snow. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, mountains

Northern Pacific bridge number 5 at Stampede Pass, Washington Territory, in 1887. Long timber trestle on switchback, two men walking on track, in snow. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback

Northern Pacific bridge number 5 at Stampede Pass, Washington Territory, 1887. Timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 40 over Yakima River, Washington Territory, in 1887. Short timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: trestle bridge,

Northern Pacific bridge number 4 at Stampede Pass, Washington Territory, 1887. Short timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 4 at Stampede Pass, Washington Territory, 1887. Short timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 4 at Stampede Pass, Washington Territory, 1887. Long curved trestle on switchback, workers. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, railroad employee

Northern Pacific bridge number 32 at Stampede Pass, Washington Territory, 1887. Timber trestle on switchback, horse-drawn construction wagon in distance. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, wagon

Northern Pacific bridge number 3 at Stampede Pass, Washington Territory, 1887. Short timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 21 at Stampede Pass, Washington Territory, in 1887. Early construction of timber trestle, workers. Photo by I.G. Davidson, J.M. Fredrickson collection. Other Subject Classes: bridge, railroad employee

Northern Pacific bridge number 2 at Stampede Pass, Washington Territory, 1887. Curved timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 17 at Stampede Pass, Washington Territory, 1887. Low timber trestle on switchback, logged-off mountains. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, mountains

Northern Pacific bridge number 16 at Stampede Pass, Washington Territory, 1887. Curved timber trestle on switchback in snow, logged-off mountains. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, mountains

Northern Pacific bridge number 16 at Cabin Creek, Washington Territory, 1887. Trestle over Cabin Creek. Photo by I.G. Davidson, J.M. Fredrickson collection. Other Subject Classes: bridge

Northern Pacific bridge number 15 at Cabin Creek, Washington Territory, 1887. Trestle and truss span, construction train of flat cars with Decapod-type steam locomotive, workers, construction camp. Photo by J.M. Fredrickson collection.. Other Subject Classes: bridge, work train, steam locomotive, freight car, railroad employee, construction camp

Northern Pacific bridge number 13 at Stampede Pass, Washington Territory, 1887. Short trestle, workers. Photo by I.G. Davidson, J.M. Fredrickson collection. Other Subject Classes: bridge, railroad employees

Northern Pacific bridge number 11 at Stampede Pass, Washington Territory, 1887. Tall timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 11 at Stampede Pass, Washington Territory, 1887. Low timber trestle on switchback in snow. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback

Northern Pacific bridge number 10 at Stampede Pass, Washington Territory, 1887. Tall timber trestle, mainline. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, track

Northern Pacific bridge number 10 at Stampede Pass, Washington Territory, 1887. Low timber trestle on switchback in snow. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback

Northern Pacific bridge at Teanaway, Washington Territory, circa 1886. Timber bridge and mainline over dam, horse and wagon. Photo by I.G. Davidson, J.M. Fredrickson collection. Other Subject Classes: bridge, track, wagon

Northern Pacific bridge at Stampede Pass, Washington Territory, in 1887. Large timber trestle at Station 253 on switchback, track inspector on velocipede. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, railroad employee, velocipede, mountains

Northern Pacific bridge at Stampede Pass, Washington Territory, in 1887. Timber trestle at Station 379 on switchback, logged-off hillside. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback, mountains

Northern Pacific bridge at Stampede Pass, Washington Territory, in 1887. Curved timber trestle at Station 70 on switchback. Photo by I.G. Davidson, J.M. Fredrickson collection.. Other Subject Classes: bridge, switchback