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Jefferson County

Montana
Abandoned Boulder River Bridge   [Map · Street View]
Abandoned bridge over Boulder River on Abandoned Road
Derelict/abandoned
BN - Big Pipestone Creek Trestle   [Map]
Abandoned deck plate girder bridge over Big Pipestone Creek on Northern Pacific Railroad Homestake Pass
"Out Of Service"
Built 1901-2
BN - Spire Rock Trestle   [Map]
Abandoned deck plate girder bridge over Halfway Creek on Northern Pacific Railroad Homestake Pass
"Out Of Service"
Built 1901-2
Boulder River Bridge   [Map]
Lost through truss bridge over Boulder River on CR 304
No longer exists
Built 1899; replaced 2001
Boulder River Bridge   [Map · Street View]
Warren pony truss with all verticals bridge over Boulder River on Old Highway 2
Open to dead end traffic
CR410 Williams Bridge   [Map]
Pratt through truss bridge over Jefferson River on CR 410
Open to traffic
Built 1898; rehabilitated 1980
Frontage Road 099 Bridge   [Map]
Concrete tee beam bridge over Cataract Creek 030 on Frontage Road 099
Open to traffic
Built 1933
GN - Corbin Trestle   [Map]
Abandoned Deck plate girder trestle over Corbin Road/Trestle Lane on Great Northern Railway
Derelict/abandoned
Built 1902
Jefferson River Bridge   [Map]
Pratt through truss bridge over Jefferson River on CR 170
Open to traffic
Built 1914
Jefferson River Bridge   [Map]
Lost two-span through truss bridge over Jefferson River on US 287
No longer exists
Built ca. 1930; replaced 2001
Jefferson River Bridge   [Map]
Through truss bridge over Jefferson River on Montana RailLink
Open to traffic
Lewis & Clark Caverns Arch Bridge   [Map]
Stone Arch Bridge over hiking trail on Tour Road
Built 1936
MILW - Fish Creek Trestle   [Map]
Lost Deck plate girder bridge over Fish Creek Canyon on Chicago, Milwaukee, St. Paul & Pacific Railroad
Removed, reportedly by a rancher
MILW - Fish Creek Tunnel   [Map]
Abandoned tunnel on Chicago, Milwaukee, St. Paul & Pacific Railroad
Abandoned
MILW - Little Pipestone Creek Tributary Trestle   [Map]
Lost Bridge over Little Pipestone Creek Tributary on Chicago, Milwaukee, St. Paul & Pacific Railroad
Removed
MT 2 Over Railroad Bridge   [Map]
Tee beam bridge over railroad on MT 2/Old US 10
Open to traffic
Old Bear Gulch Road Bridge   [Map · Street View]
Tee Beam bridge over Boulder River on Old Bear Gulch Road
Intact but closed to all traffic
Old Sappington Bridge Span at Rockin' the River   [Map · Street View]
Polygonal Warren through truss bridge
Bridge according to 2000 NBI used to carry US 287 over the Jefferson River until the new bridge replaced it in 2001. Perhaps it was relocated to its current location to be used in the future for some other purpose.
US287 Jefferson River Bridge (Old)   [Map]
Relocated Polygonal Warren through truss bridge over Jefferson River on US 287
Replaced by a new bridge
Built 1930; spans later relocated to different locations for reuse.