Status: Open to traffic
Location: 46.896695,-113.060730
Carries CR 104 over Big Blackfoot River
Design: truss/pony/polygonal
Design Details: Polygonal Warren pony truss
Total Length: 189.0 Feet
Span Length: 101.1 Feet
Overview: Pony truss bridge over Big Blackfoot River on CR 104
History: Built 1931
Built: 1931
Location: Powell County
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356686
Big Blackfoot River Bridge
View from the east
Photo taken by David Jones in June 2016
356687
Big Blackfoot River Bridge
South portal
Photo taken by David Jones in June 2016
356688
Big Blackfoot River Bridge
Photo taken by David Jones in June 2016
Status: Open to traffic
Location: 46.919168,-113.015088
Carries CR 111 over Big Blackfoot River
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 92.9 Feet
Span Length: 89.9 Feet
Overview: Pony truss bridge over Big Blackfoot River on CR 111
History: Built 1914
Built: 1914
Location: Powell County
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356689
Big Blackfoot River Bridge
View from southwest
Photo taken by David Jones in June 2016
356690
Big Blackfoot River Bridge
Western Portal
Photo taken by David Jones in June 2016
356691
Big Blackfoot River Bridge
Underside of east end
Photo taken by David Jones in June 2016
Status: No longer exists
Location: 46.758324,-112.704099
Carries MT 141 over Blackfoot River
Design: truss
Design Details: Truss
Total Length: 186.0 Feet
Span Length: 0.0 Feet
Overview: Lost truss bridge over Blackfoot River on MT 141
History: Built 1936; replaced 2004
Built: 1936
Location: Powell County
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Status: Open to traffic
Location: 0.000000,0.000000
Carries Service Road over Clark Fork
Design: truss/pony
Design Details: Pony truss
Total Length: 46.9 Feet
Span Length: 39.0 Feet
Overview: Wooden truss bridge over Clark Fork on Service Road
History: Built 1930; rehabilitated 1982
Built: 1930
Location: Powell County
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Status: Replaced by a new bridge
Location: 46.594830,-113.012812
Carries CR 019 over Clark Fork
Design: truss/pony
Design Details: Pony truss
Total Length: 151.9 Feet
Span Length: 149.9 Feet
Overview: Lost pony truss bridge over Clark Fork on CR 019
History: Built 1910; replaced 2003
Built: 1910
Location: Powell County
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401651
Clark Fork River Bridge at Jens
View from the southwest
Photo taken by David Jones in July 2016
Status: In storage
Location: 46.393055,-112.737601
Carries Rock Creek Road over Clark Fork
Design: truss/through/pratt
Design Details: Pin connected Pratt through truss with A-frame portal bracing
Total Length: 128.0 Feet
Span Length: 126.0 Feet
Overview: Relocated through truss bridge behind Montana State Prison Museum; formerly located over Clark Fork on Rock Creek Road in Garrison
History: Built 1912; relocated ca. 2006
Built: 1912
Location: Powell County
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220154
Overview; South; Side; View To East-Northeast
Photo taken by Historic American Engineering Record
220155
Overview; North Side; View To South
Photo taken by Historic American Engineering Record
220156
Overview; South Side; View To East-Southeast
Photo taken by Historic American Engineering Record
220157
South Side; View To North-Northwest
Photo taken by Historic American Engineering Record
220158
Three-Quarters View; South Side; View To Northeast
Photo taken by Historic American Engineering Record
220159
Three-Quarters View; North Side; View To Southwest
Photo taken by Historic American Engineering Record
220160
West Portal; View To East
Photo taken by Historic American Engineering Record
220161
East Portal; View To West
Photo taken by Historic American Engineering Record
220162
Detail Of Trusses; South Side; View To Northwest
Photo taken by Historic American Engineering Record
220163
Detail Of Vertical Post; North Side; View To Northeast
Photo taken by Historic American Engineering Record
220164
Detail Of Dedication Plate, Upper Struts, And Sway Braces; View To East
Photo taken by Historic American Engineering Record
371018
Photo taken by David Jones
371019
Photo taken by David Jones
371020
Photo taken by David Jones
Status: Open to traffic
Location: 46.595459,-112.591371
Carries CR 52 over Little Blackfoot River
Design: truss/through/pratt
Design Details: Pratt through truss
Total Length: 127.0 Feet
Span Length: 107.9 Feet
Overview: Pratt through truss bridge over Little Blackfoot River on CR 52 in Avon
History: Built 1908; rehabilitated 1999
Built: 1908
Location: Powell County
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272550
Photo taken by Jack Schmidt
272551
Photo taken by Jack Schmidt
Status: Replaced by a new bridge
Location: 46.537049,-112.724469
Carries CR 249 over Little Blackfoot River
Design: truss/pony
Design Details: Pony truss
Total Length: 62.0 Feet
Span Length: 60.0 Feet
Overview: Lost pony truss bridge over Little Blackfoot River on CR 249
History: Built 1915; replaced 2011
Built: 1915
Location: Powell County
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366726
Litle Blackfoot River Bridge
Photo taken by David Jones in October 2016
Status: Open to traffic
Location: 46.573221,-112.663954
Carries CR 186 over Little Blackfoot River
Design: truss/pony/parker
Design Details: Pin-connected, 5-panel Parker pony truss
Total Length: 61.0 Feet
Span Length: 60.0 Feet
Overview: Pony truss bridge over Little Blackfoot River on CR 186
History: Built 1914
Built: 1914
Location: Powell County
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275683
Little Blackfoot River Bridge
Photo taken by Jack Schmidt in July 2013
275684
Little Blackfoot River Bridge
Photo taken by Jack Schmidt in July 2013
314802
File:Little Blackfoot River Bridge (2012) - Powell County, Montana.png
Photo taken by Wikimedia Commons user Robstutz
Status: No longer exists
Location: 46.979795,-113.092317
Carries CR 001 over North Fork Blackfoot River
Design: truss/through
Design Details: Through truss
Total Length: 152.9 Feet
Span Length: 151.9 Feet
Overview: Lost through truss bridge over North Fork Blackfoot River on CR 001
History: Built 1914; replaced 2000
Built: 1914
Location: Powell County
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Status: Abandoned
Location: 46.529552,-112.833988
Carries Railroad (MILW) over
Design: tunnel
Design Details: Tunnel
Total Length: 1975.0 Feet
Span Length: 1975.0 Feet
Overview: Abandoned tunnel on Railroad (MILW)
History: Built 1908
Built: 1908
Location: Powell County
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253163
Photo taken by montanatom50
253164
Photo taken by montanatom50
253165
Photo taken by montanatom50
253166
Photo taken by montanatom50
Status: Open to traffic
Location: 46.532089,-112.835298
Carries Montana Rail Link over
Design: tunnel
Design Details: Tunnel
Total Length: 1394.0 Feet
Span Length: 0.0 Feet
Overview: Tunnel on Montana Rail Link
History: Built 1882, widened 1909
Built: 1882
Location: Powell County
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353739
MRL - Garrison Tunnel
View from south end
Photo taken by David Jones in April 2016
Status:
Location: 46.556271,-112.876153
Carries Phosphate Branch Railroad over Clark Fork
Design: girder/pony/plate
Design Details: Pony plate girder
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Pony/through plate girder bridge over Clark Fork on Phosphate Branch Railroad
History:
Built:
Location: Powell County
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353785
MRL - Phosphate Branch Clark Fork River Bridge
View looking west
Photo taken by David Jones in May 2016
353786
MRL - Phosphate Branch Clark Fork River Bridge
Photo taken by David Jones in May 2016
Status:
Location: 46.390665,-112.737207
Carries over
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Bridge
History:
Built:
Location: Powell County
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Status: Open to traffic
Location: 46.390603,-112.737139
Carries City Streets over Clark Fork 046
Design: girder
Design Details: Girder
Total Length: 151.9 Feet
Span Length: 49.9 Feet
Overview: Girder bridge over Clark Fork 046 on City Streets
History: Built 1912
Built: 1912
Location: Powell County
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358737
Conley Street Bridge
Photo taken by David Jones in July 2016
358738
Conley Street Bridge
Photo taken by David Jones in July 2016
358739
Conley Street Bridge
Photo taken by David Jones in July 2016
358740
Conley Street Bridge
Photo taken by David Jones in July 2016
358741
Conley Street Bridge
View from southeast
Photo taken by David Jones in July 2016
358742
Conley Street Bridge
East Portal
Photo taken by David Jones in July 2016
488784
Conley Street Bridge
Photo taken by Jon Roanhaus
Status: Removed but not replaced
Location: 46.376998,-112.737095
Carries Valley View Drive over Clark Fork
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Clark Fork on Valley View Drive
History:
Built:
Location: Powell County
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Status: Open to traffic (?)
Location: 46.408685,-112.745714
Carries Cattle Drive over Clark Fork
Design: truss/pony/queenpost
Design Details: Queenpost pony truss (?)
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Queenpost pony truss bridge over Clark Fork on Cattle Drive in Grant-Kohrs Ranch National Historic Site
History:
Built:
Location: Powell County
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Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.
