Status: replaced by a new bridge
Location: 46.278056,-114.161866
Carries US 93 over Bitterroot River
Design: truss/through
Design Details: Through truss
Total Length: 392.1 Feet
Span Length: 175.9 Feet
Overview: Through truss bridge over Bitterroot River on US 93 in Hamilton
History: Built 1940
Built: 1940
Location: Ravalli County
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223573
Overview; View To South
Photo taken by Kristi Hager for the Historic American Engineering Record
223574
Overview; West Side; View To East-Northeast
Photo taken by Kristi Hager for the Historic American Engineering Record
223575
Overview; East Side; View To West
Photo taken by Kristi Hager for the Historic American Engineering Record
223576
Three-Quarters View; East Side; View To Southwest
Photo taken by Kristi Hager for the Historic American Engineering Record
223577
Three-Quarters View; East Side; View To North-Northwest
Photo taken by Kristi Hager for the Historic American Engineering Record
223578
South Portal; View To North
Photo taken by Kristi Hager for the Historic American Engineering Record
223579
Three-Quarters View; West Side; View To Northeast
Photo taken by Kristi Hager for the Historic American Engineering Record
223580
Three-Quarters View; West Side; View To East-Southeast
Photo taken by Kristi Hager for the Historic American Engineering Record
223581
North Portal; View To South
Photo taken by Kristi Hager for the Historic American Engineering Record
223582
Detail Of Underside Of Deck; View To North-Northeast
Photo taken by Kristi Hager for the Historic American Engineering Record
Status: Open to traffic
Location: 46.229743,-114.191694
Carries MT 531 over Sawtooth Creek
Design: arch/deck
Design Details: Arch
Total Length: 54.1 Feet
Span Length: 24.9 Feet
Overview: Concrete arch bridge over Sawtooth Creek on MT 531
History: Built 1972
Built: 1972
Location: Ravalli County
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369700
Sawtooth Creek Bridge
View from the east
Photo taken by David Jones in November 2016
369701
Sawtooth Creek Bridge
Southeastern arch
Photo taken by David Jones in November 2016
369702
Sawtooth Creek Bridge
View from the south showing both arches
Photo taken by David Jones in November 2016
369703
Sawtooth Creek Bridge
Northwestern Portal
Photo taken by David Jones in November 2016
369704
Sawtooth Creek Bridge
View from the north
Photo taken by David Jones in November 2016
Status: replaced by a new bridge
Location: 45.805008,-114.262564
Carries CR 701 over West Fork Bitterroot River
Design: truss/pony
Design Details: Pony truss
Total Length: 170.0 Feet
Span Length: 122.1 Feet
Overview: Pony truss bridge over West Fork Bitterroot River on CR 701
History: Built 1940
Built: 1940
Location: Ravalli County
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Status: Replaced by new bridge
Location: 46.414722,-114.131944
Carries CR 404 over Bitterroot River
Design: truss/through/pratt
Design Details: Pin-connected, 8-panel Pratt through truss
Total Length: 188.0 Feet
Span Length: 148.0 Feet
Overview: Lost through truss bridge over Bitterroot River on CR 404, just east of Victor
History: Built 1907; replaced 2000
Built: 1907
Location: Ravalli County
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119413
General View Of South Side
Photo taken by Historic American Engineering Record
119414
Oblique View Of South Side
Photo taken by Historic American Engineering Record
119415
West Opening Showing Traffic Deck
Photo taken by Historic American Engineering Record
119416
View From West Opening Showing Vertical Members
Photo taken by Historic American Engineering Record
119417
Detail Of Traffic Deck From West Opening
Photo taken by Historic American Engineering Record
119418
Detail View From West Showing Floor Beams And Stringers
Photo taken by Historic American Engineering Record
119419
Detail Of East Underside
Photo taken by Historic American Engineering Record
119420
Detail Of Portal Connection
Photo taken by Historic American Engineering Record
119421
Detail Of Link Pin Connection
Photo taken by Historic American Engineering Record
119422
Detail Of Southeast Corner Bearing
Photo taken by Historic American Engineering Record
119423
Detail Of Southeast Corner Bearing, Opposite Side
Photo taken by Historic American Engineering Record
Status: Open to traffic
Location: 46.198269,-114.168042
Carries Montana Rail Link over Bitterroot River
Design: truss/pony/warren
Design Details: 1-120' "Through Lattice Girder" (Warren Pony Truss)
1-50' Through Plate Girder
2-50' Deck Plate Girder
Total Length: 311.0 Feet
Span Length: 120.0 Feet
Overview: Pony truss bridge over Bitterroot River on Montana Rail Link
History: Built 1950 using secondhand spans
Built: 1950
Location: Ravalli County
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172508
The top of the bridge, looking south.
Photo taken by Matthew Harris in August 2010
172509
The bridge from a few hundred feet away.
The Highway 93 bridge can be seen right behind it.
Photo taken by Matthew Harris in August 2010
Status: Open to traffic
Location: 46.092222,-114.175556
Carries Old Darby Road (CR 600) over Bitterroot River
Design: truss/through/polygonal
Design Details: Polygonal Warren through truss
Total Length: 164.1 Feet
Span Length: 160.1 Feet
Overview: Through truss bridge over Bitterroot River on Old Darby Road
History: Built 1917; rehabilitated 2001
Built: 1917
Location: Ravalli County
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172778
The Bridge from the southwest side.
Photo taken by Matthew Harris in August 2010
172779
The deck of the bridge
Single lane, and made of wood.
Photo taken by Matthew Harris in August 2010
172780
The bridge from the river.
Photo taken by Matthew Harris in August 2010
275693
Old Darby Road Bridge
Photo taken by Jack Schmidt in July 2013
Status:
Location: 46.014358,-114.170253
Carries over Tincup Creek
Design: slab
Design Details: Slab
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Slab bridge over Tincup Creek
History:
Built:
Location: Ravalli County
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175896
The bridge from the front
Photo taken by Matthew Harris
175897
The bridge from the side.
Photo taken by Matthew Harris
Status: Open to pedestrians
Location: 46.192439,-114.222341
Carries Forest Service Trail #123 over Roaring Lion Creek
Design: truss/deck/warren
Design Details: Warren deck truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Deck truss bridge over Roaring Lion Creek on Forest Service Trail #123
History:
Built:
Location: Ravalli County
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193293
The bridge from the side.
Although the view is obscured, this view shows the trussing underneath the bridge.
Photo taken by Matthew Harris in September 2010
193294
The deck of the bridge.
Photo taken by Matthew Harris in September 2010
193295
The bridge from above.
This shows the bridge from above, just off of the trailhead. This also shows the bridge in winter. There is a good chance that using a truss design on such a small, pedestrian bridge is because the amount of snow and ice on the bridge in winter can get to be quite large.
Photo taken by Matthew Harris in February 2011
Status: Open to authorized vehicles only
Location: 46.015191,-114.164126
Carries Bridge Lane over Bitterroot river
Design: truss/through/polygonal/alt-verticals
Design Details: Polygonal Warren through truss with alternating verticals
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Polygonal Warren through truss over the Bitterroot River on Bridge Lane.
History:
Built:
Location: Ravalli County
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447247
Ranch Bridge
Posted By DK for J B-R
447248
Ranch Bridge
Posted By DK for J B-R
447249
Ranch Bridge
Posted By DK for J B-R
447250
Ranch Bridge
Posted By DK for J B-R
447251
Ranch Bridge
Posted By DK for J B-R
Status:
Location: 46.093483,-114.180809
Carries pipeline over Bitterroot River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Bridge over Bitterroot River on pipeline
History:
Built:
Location: Ravalli County
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Status: Open to traffic
Location: 46.327192,-114.108294
Carries Quast Ln over Surprise Ditch 060
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 27.9 Feet
Span Length: 25.9 Feet
Overview: Concrete tee beam bridge over Surprise Ditch 060 on Quast Ln
History: Built 1918; rehabilitated 1970
Built: 1918
Location: Ravalli County
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Status: Open to traffic
Location: 46.206589,-114.141972
Carries Grantsdale Road over Skalkaho Cr Overflow 040
Design: beam/tee
Design Details: Concrete tee beam
Total Length: 22.0 Feet
Span Length: 20.0 Feet
Overview: Concrete tee beam bridge over Skalkaho Cr Overflow 040 on Grantsdale Road
History: Built 1935
Built: 1935
Location: Ravalli County
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Status: Intact but closed to all traffic
Location: 46.580152,-114.078212
Carries Montana Rail Link over Bitterroot River
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 459.0 Feet
Span Length: 120.0 Feet
Overview: Warren pony truss bridge over Bitterroot River on Montana Rail Link
History: Built 1944 using secondhand spans
Built: 1944
Location: Ravalli 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.
