Conley Street Bridge
Conley Street Bridge, Road bridge in Deer Lodge, United States
The Conley Street Bridge spans the Clark Fork River at the western end of Conley Avenue, featuring standard concrete girders flush with sidewalls.
Between 1907 and 1912, inmates from Montana State Penitentiary constructed this bridge, making it the first continuous span reinforced concrete T-beam bridge in Montana.
The bridge served as a connection point to Northern Pacific Railway and Milwaukee Road Railroad yards, essential for delivering supplies to the penitentiary.
The structure stands at coordinates 46.390612, -112.737137, providing vehicle access across Clark Fork River for residents and visitors of Deer Lodge.
Documentation from the Historic American Engineering Record assigns the bridge survey number MT-161, marking its engineering significance in United States infrastructure.
Location: Deer Lodge
GPS coordinates: 46.39061,-112.73714
Latest update: September 23, 2025 16:56
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