Thursday, November 30, 2017

CN/DM&IR 1916 Bridge over St. Louis River at Oliver, WI

(Bridge Hunter, no Historic Bridges, John Weeks III) For John Marvig, I found an Oliver Approach Bridge, but not his bridge.

DM&IR = Duluth, Missabe & Iron Range Railway

3D Satellite, 15 photos
Its center pier design is rather unique.
John Weeks III

CN wrapping up Oliver Bridge work
"A dozen different railroads have trackage rights over the bridge, resulting in very heavy traffic." [John Weeks III]

Innovative design of a swinging, double
-deck, Warren through/deck truss main 
span with rail traffic above and vehicular 
traffic below, created to meet 
challenging site conditions and federal 
regulation. This feature includes a 
center-pivot bearing mechanism for the 
swing span.

Design and construction of the double-deck, steel approach 
viaduct spans created to accommodate challenging site 
conditions and heavier loads.

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