Oregon Short Line Railroad

Reporting mark: OSL
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Ashton-Tetonia Trail - Bitch Creek Trestle (Fremont County, Idaho)
built 1924, rail line abandoned 1984, opened to pedestrians in 2010
Deck plate girder bridge over Bitch Creek on Ashton-Tetonia Trail
Open to pedestrians only

Ashton-Tetonia Trail - Conant Creek Trestle (Fremont County, Idaho)
Built 1894 at American Falls; dismantled 1911; relocated here 1914
Three-span Pegram deck truss bridge over Conant Creek
Open to pedestrians only as part of Ashton-Tetonia Trail

Ashton-Tetonia Trail - Fall River Trestle (Fremont County, Idaho)
Pratt deck truss bridge over Fall River on Ashton-Tetonia Trail
Open to pedestrians only

EIRR - Lorenzo Bridge (Madison County, Idaho)
Warren through truss with all verticals bridge over Snake River on Eastern Idaho Railroad (EIRR)
Open to traffic

EIRR - Ririe Bridge (B) (Jefferson County, Idaho)
Built 1894 as five-span bridge at Nyssa, Oregon; one span relocated here 1914
Pegram through truss bridge over Snake River Flood Channel on the Eastern Idaho Railroad - East Belt Branch
Open to Traffic

EIRR - St. Anthony Pegram Truss Bridge (Fremont County, Idaho)
Built 1896; relocated here 1914
Two-span Pegram through truss bridge over Henry's Fork Snake River on the Eastern Idaho Railroad (EIRR)
Open to traffic

OSL - American Falls Pegram Deck Truss (Power County, Idaho)
Built 1883; Pegram trusses added 1894; Whipple deck truss replaced in 1902; Replaced 1911
Lost Pegram deck truss bridge over American Falls on Oregon Short Line Railroad
Replaced by a new bridge

OSL - Bear River Bridge (Bear Lake County, Idaho)
Lost Pegram through truss bridge over Bear River on Oregon Short Line Railroad
Replaced by a new bridge

OSL - Caldwell Pegram Truss (Canyon County, Idaho)
Replaced 1911
Lost Pegram through truss bridge over Boise River on Oregon Short Line
Replaced by a new bridge

OSL - Nyssa Pegram Truss (Malheur County, Oregon)
Built 1894; Repaced 1914
Lost Pegram through truss bridge over Snake River on Oregon Short Line Railroad
Replaced by a new bridge

OSL - Ontario Pegram Truss (Malheur County, Oregon)
Built 1894; Replaced 1914, some trusses relocated
Lost Pegram through truss bridge over Snake River on Oregon Short Line Railroad
Replaced by a new bridge

OSL - Payette Pegram Bridge (Payette County, Idaho)
Built 1894-6; Replaced 1913-4
Lost Pegram through truss bridge over Payette River on Oregon Short Line Railroad
Replaced by a new bridge

OSL - Weiser Pegram Bridge (Washington County, Idaho)
Built 1894-6; Replaced 1913-4
Lost Pegram through truss bridge over Weiser River on Oregon Short Line Railroad
Replaced by a new bridge

UP - Boat Ford Slough Bridge (Harney County, Oregon)
Abandoned bridge over Boat Ford Slough on Union Pacific Railroad
Derelict/abandoned

UP - Bridge Island Bridge (N) (Malheur County, Oregon)
Built 1914
Warren through truss bridge over Snake River on Union Pacific Railroad
Open to traffic

UP - Bridge Island Bridge (S) (Canyon County, Idaho)
Warren through truss bridge over Snake River Channel on Union Pacific Railroad
Open to traffic

UP - Crane Creek Bridge (Harney County, Oregon)
Abandoned bridge over Crane Creek on Union Pacific Railroad
Derelict/abandoned

UP - East Fork Silvies River Bridge (Harney County, Oregon)
Abandoned bridge over East Fork Silvies River on Union Pacific Railroad
Derelict/abandoned

UP - Grace Pegram Truss Bridge (Caribou County, Idaho)
Built 1894 at Georgetown, Idaho; relocated here ca. 1913
Pegram through truss bridge over Bear River on Union Pacific Railroad
Derelict/abandoned

UP - Gwynn Bridge (Malheur County, Oregon)
Built 1913; Removed sometime after 1999
Lost Pony plate girder bridge over Malheur River on Union Pacific Railroad
No longer exists

UP - Horsehsoe Bend Bridge (E) (Malheur County, Oregon)
Abandoned pony/through plate girder bridge over Malheur River on Union Pacific Railroad
Abandoned

UP - Horseshoe Bend Bridge (W) (Malheur County, Oregon)
Lost Pony/through plate girder bridge over Malheur River on Union Pacific Railroad
Destroyed by flooding(?)

UP - Horseshoe Bend Tunnel (Malheur County, Oregon)
Lost Tunnel on Union Pacific Railroad
Collapsed

UP - Jonesboro Bridge (Malheur County, Oregon)
Built 1913; Removed sometime after 1999
Lost Pony/through plate girder bridge over Highway 7 on Union Pacific Railroad
Removed

UP - Malheur River Bridge #2 (Malheur County, Oregon)
Abandoned deck plate girder bridge over Malheur River on Union Pacific Railroad
Abandoned

UP - Malheur River Bridge #3 (Malheur County, Oregon)
Abandoned pony/through plate girder bridge over Malheur River on Union Pacific Railroad
Abandoned and missing a span, likely due to flooding.

UP - Malheur River Bridge #4 (Malheur County, Oregon)
Built 1912; Abandoned 1990
Abandoned deck plate girder bridge over Malheur River on Union Pacific Railroad
Abandoned

UP - Malheur River Bridge #5 (Malheur County, Oregon)
Built 1912, Closed due to flooding 1984, Abandoned 1990
Abandoned pony/through plate girder bridge over Malheur River on Abandoned Oregon Eastern Railroad
Abandoned

UP - North Fork Malheur River Bridge (Malheur County, Oregon)
Built 1913, Closed to to flooding 1984, Abandoned 1990
Abandoned pony/through plate girder bridge over North Fork Malheur River on Abandoned Oregon Eastern Railroad
Abandoned

UP - Ontario Subway (Malheur County, Oregon)
Built 1939
Steel stringer bridge over BUS US30 on Union Pacific Railroad
Open to traffic

UP - Snake River Bridge (Malheur County, Oregon)
Built 1914
Warren through truss with all verticals bridge over Snake River on Union Pacific Railroad
Open to traffic

UP - Snake River Bridge (Old) (Baker County, Oregon)
Lost Deck truss bridge over Snake River on UP RR
Replaced by a new bridge

UP - Tunnel (Malheur County, Oregon)
Abandoned tunnel on Union Pacific Railroad
Abandoned

Wood River Trail - Cold Springs Pegram Bridge (Blaine County, Idaho)
Built 1894 as part of a five-span bridge at Ontario, Oregon; one span relocated here 1917; rail line discontinued 1981; converted to pedestrian use 1984
Pegram through truss bridge over Big Wood River on a pedestrian trail
Open to pedestrians

Wood River Trail - Gimlet Pegram Truss Bridge (Blaine County, Idaho)
Built 1894 as part of a five-span bridge at Ontario, Oregon; One span relocated here 1914; Rail line discontinued 1981; Converted to pedestrian use 1984
Pegram through truss bridge over Big Wood River on Union Pacific Railroad
Open to pedestrians; This one is reccomended for hikers/equestrians.

WYCO - Malheur River Bridge (Malheur County, Oregon)
Built 1906
Pratt through truss bridge over Malheur River on Wyoming & Colorado Railroad
Open to traffic