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UP Watertown Plank Road Bridge

Parker Through Truss over Canadian Pacific Railway
West Allis, Milwaukee County, Wisconsin

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Name UP Watertown Plank Road Bridge
Built By Milwaukee, Sparta & Northwestern Railroad
Contractor (Main Span) Pennsylvania Steel Company of Steelton, Pennsylvania
Contractor (Approach Spans) American Bridge Company of New York
Contractor (Substructure) Cleary-White Construction Company of Chicago
Currently Owned By Union Pacific Railroad
Length 511 Feet, 182 Foot Main Span
Width 2 Tracks
Height Above Ground 45 Feet (Estimated)
Superstructure Type Parker Through Truss and Deck Girder
Substructure Type Concrete and Steel Tower
Date Built 1910
Traffic Count 30 Trains/Day (Estimated)
Current Status In Use
UP Bridge Number 91.12
Significance Moderate Significance


View an article regarding the construction of this route.

This massive bridge can be seen for blocks in each direction from Watertown Plank Road.
Built in 1910, the bridge features 5 deck girders on steel towers crossing Watertown Plank Road and Underwood Creek. The main span is a huge 7 panel riveted Parker Through truss with M-Frame portal bracings.
The substructures are all concrete, and the plates state Pennsylvania Steel Company as the constructor for the main span, and American Bridge Company the approach spans.
Watertown Plank Road started as a toll road in the 1830s between Watertown and Milwaukee, and later became US-16. US-16 once extended into Milwaukee, but quit following the current route upon the construction of I-94 in the 1960s.
US-16 was turned over to the state in 1986 as WI-16, which currently ends at I-94 near Pewaukee.
Overall, the bridge appears to be in fair to good condition.

The author has ranked the bridge as being moderately significant, due to the truss design.
The photo above is looking from Watertown Plank Road.

Citations

Source Type

Source

Build Date Date Stamp
Contractor (Main Span) Pennsylvania Steel Company plaque
Contractor (Approach Span) Missing American Bridge Company plaque
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele