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Description

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Names
Name
(Not Shown) UP Milwaukee Avenue Bridge (Near West Side)
Chicago & North Western Railway Bridge #1.6

Carries
Carries

Crosses
Crosses

Railroads
Built By

Superstructure Contractors
Superstructure Contractor

American Bridge Company of New York

Substructure Contractors
Substructure Contractor

Bates & Rogers Construction Company of Chicago, Illinois

Erection Contractors
Erection Contractor

Strobel Steel Construction Company of Chicago, Illinois

Engineers
Design Engineer

Edward C. Carter

Owner
Currently Owned By

Length

Width

Height
Height Above Ground

Superstructure
Superstructure Design

Trough Floor Steel Stringer

Substructure
Substructure Design

Concrete and Steel Bent

Build Date 1
Build Date 2
Build Date 3
Build Date 4
Build Date 5
Date Built

1910

Lost Date

Relocation Information 1

Use "Original Location"

Relocation Information 2

Relocation Information 3

Traffic Count
Traffic Count

Status
Current Status

Bridge Numbers

1.6
0.07

Significance
Significance

Documentation Date
Documentation Date

Railroad Story

Bridge Summary
<P>Located on the elevated approach to the Ogilvie Transportation Center, this viaduct carries the Union Pacific North, Northwest and West Lines over Milwaukee Avenue. In the early 20th Century, the C&NW began to plan for a new station located west of the Chicago River, which would reduce delays in passenger service, as well as serve as the central terminal for the C&NW. Construction began on the new terminal in 1909, and work was completed in 1911. As part of the construction, the Galena and Wisconsin Division lines were elevated and realigned, joining at the intersection of Jefferson Street and Hubbard Street. Several viaducts would be constructed to cross city streets and other railroads, and concrete retaining walls would be constructed between the underpasses. The approaches to the new station were designed by Edward C. Carter, Chief Engineer of the Chicago & North Western Railway. <P> <P>The viaduct at Milwaukee Avenue was constructed using a typical trough floor design. The bridge consist of two 23-foot and two 14-foot trough floor steel stringer spans, set onto concrete abutment and steel bent piers. The bridge runs at a heavy skew, on account of the angle of Milwaukee Avenue. The structure was constructed for six tracks, and all remain in use. This type of bridge utilizes numerous parallel steel stringers and a sheet metal deck, which are constructed as one unit. The superstructure of the bridge was fabricated by American Bridge Company, the substructures were constructed by Bates & Rogers Construction Company; and the steel was erected by Strobel Steel Construction Company. This design of bridge was commonly used for track elevation projects, as it provided a durable and cost effective design. In addition, ballast decks were preferred by railroads and municipalities, as they provided a safer design for roadway users and the maintenance was more cost effective than an open deck design. The west face of the bridge is connected to the nearby <a href="http://johnmarvigbridges.org/new/admin/edit-webpage.php?id=2962">Fulton Street Bridge</a>, although a large triangular concrete retaining wall creates two separate structures for a majority of the width. Overall, the bridge appears to be in fair condition, with some deterioration noted throughout the structure. The author has ranked the bridge as being locally significant, due to the common design.</P>
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