Status: Open to traffic
Location: 45.565317,-100.468492
Carries US 12 over Missouri River (Oahe Lake)
Design: truss/through/warren
Design Details: Cantilevered Warren through truss
Total Length: 5058.6 Feet
Span Length: 449.8 Feet
Overview: Through truss bridge over Missouri River (Oahe Lake) on US 12 at Mobridge
History: Built 1959; rehabilitated 1980
Built: 1959
Location: Walworth County
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338823
Mission Township, SD, USA
Photo taken by Panoramio user JBTHEMILKER
338824
Mission Township, SD, USA
Photo taken by Panoramio user JBTHEMILKER
338825
Mission Township, SD, USA
Photo taken by Panoramio user JBTHEMILKER
338826
Mission Township, SD, USA
Photo taken by Panoramio user JBTHEMILKER
499613
Photo taken by Mark Yurina in May 2021
Status: Open to traffic
Location: 45.568557,-100.458806
Carries BNSF Railway over Missouri River (Oahe Lake)
Design: truss/through/warren
Design Details: Warren through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Through truss bridge over Missouri River (Oahe Lake) on the BNSF Railway between Mobridge and Wakpala
History: Built 1961 as part of Oahe Dam Project
Built: 1961
Location: Walworth County
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109289
Main span
Photos taken July 2007 by Gerry Hodge
109290
Overview
458863
BNSF - Mobridge Bridge
looking northwest
Photo taken by Paul Everett
Status: Closed to all traffic
Location: 45.308002,-100.230836
Carries Abandoned County Road over Swan Creek
Design: truss/pony/kingpost
Design Details: Kingpost pony truss
Total Length: 82.0 Feet
Span Length: 30.8 Feet
Overview: Kingpost pony truss bridge over Swan Creek on Abandoned County Road
History: Built 1907
Built: 1907
Location: Walworth County
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Status: Replaced by a new bridge
Location: 45.568509,-100.458871
Carries Chicago, Milwaukee & St. Paul Railroad over Missouri River
Design: truss/through
Design Details: Through truss
Total Length: 1638.0 Feet
Span Length: 425.0 Feet
Overview: Lost Through truss bridge over Missouri River on Chicago, Milwaukee & St. Paul Railroad
History: Built 1907; Replaced 1961 as part of Oahe Dam Project
Built: 1907
Location: Walworth County
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366185
Published prior to 1923
458862
MILW - Missouri River Bridge (Old)
Photo from old postcard
458864
MILW - Missouri River Bridge (Old)
1909 view
Photo from Facebook
Status: Demolished
Location: 45.526412,-100.480705
Carries US 12 over Missouri River
Design: truss/through/pennsylvania
Design Details: Pennsylvania through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Pennsylvania through truss bridge over Missouri River on US 12
History: Built 1924; Replaced 1959
Built: 1924
Location: Walworth County
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366213
Public Domain
476435
Photo taken by Nick Schmiedeler in July 2020
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.
