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Barker Island Rail Bridge (North)

Quadrangular Through Truss Bridge over Wisconsin River
Wausau, Marathon County, Wisconsin

Click the Photo Above to See All Photos of This Bridge!
Name Barker Island Rail Bridge (North)
Built By Chicago & North Western Railway
Contractor (East Span) Lassig Bridge & Iron Works of Chicago
Contractor (West Span) Unknown
Contractor (Center Span) Unknown
Currently Owned By Canadian National Railway
Length 380 Feet Total, 160 Foot Longest Span
Width 1 Track
Height Above Ground 15 Feet (Estimated)
Superstructure Type Quadrangular Through Truss and Through Girder
Substructure Type Concrete
Date Erected Ca. 1900
Date Fabricated (West Span) Ca. 1880
Date Fabricated (Center Span) 1913
Date Fabricated (East Span) 1888
Original Location (West Span) Unknown
Original Location (East Span) Unknown
Traffic Count 2 Trains/Week (Estimated)
Current Status In Use
C&NW Bridge Number D-37D
Significance High Significance


This unique bridge is the northwest crossing from Barker Island to the mainland of Wausau.
Erected in approximately 1900, it is currently composed of a 110' long Quadrangular Through Truss, a 110' Through Girder and a 160' Quadrangular Through Truss.
During the flood of 1912, the center span was destroyed and replaced in 1913 by the current through girder span. Reports with depth finders have been brought to the author, showing the center span is still clearly submerged.
The former center span was similar to the current west span. Both of these riveted Quadrangular Through Trusses feature a lightweight portal bracing, seen on bridges built between 1880 and 1882, such as this one.
The east span has a much simpler history, as it once had an 1888 plaque on it. The two extant trusses and the lost truss all were relocated from unknown locations.
Currently, the bridge rests on concrete substructures. The two trusses also collapsed in the 1912 flood, but were salvageable. The west end of the bridge
Overall, the bridge remains in good condition. It is hoped that the bridge can someday be reused for a multi purpose trail.

The author has ranked this bridge as being highly significant, due to the uncommon configuration of the bridge. In addition, the west truss is a highly significant piece of engineering from the early 1880s, uncommon on modern freight railroads.
The photo above is an overview.

Wisconsin River Railroad Bridges
Upstream (Main Channel) Merrill Rail Bridge
Downstream (Main Channel) Big Bull Falls Rail Bridge (W)

Citations

Source Type

Source

Erection Date Estimated based on historic maps
Original Locations Information unknown
West Span Build Date Estimated based on similar spans
East Span Build Date Missing Lassig Bridge & Iron Works plaque
East Span Contractor Missing Lassig Bridge & Iron Works plaque
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele