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DM&E 122nd Street Bridge

Deck Plate Girder Bridge over 122nd Street
Mosby, Clay County, Missouri

Click the Photo Above to See All Photos of This Bridge!
Name DM&E 122nd Street Bridge
Built By Chicago, Milwaukee & St. Paul Railway
Built By Chicago, Rock Island & Pacific Railroad
Contractor (Main Span) American Bridge Company of New York
Contractor (Approaches) Bethlehem Steel Company of Bethlehem, Pennsylvania
Currently Owned By Canadian Pacific Railway
Currently Owned By Union Pacific Railroad
Length 190 Feet Total, 75 Foot Main Span
Width 2 Tracks
Height Above Ground 15 Feet (Estimated)
Superstructure Type Deck Plate Girder and Steel Stringer
Substructure Type Concrete
Date Built 1931, Approaches Added 1948
Traffic Count 25 Trains/Day (Estimated)
Current Status In Use
MILW Bridge Number I-834
UP Bridge Number 484.13
Significance Local Significance
Documentation Date November 2019


View an article regarding the construction of this route.

Located on the west side of Mosby, this large deck girder bridge crosses 122nd Street just east of US-69.
Built in 1931 during a line realignment, the bridge consists of a single deck plate girder span, set onto concrete substructures. While the original approach was likely a trestle, two new steel stringer spans were added on each end in 1948.
Because the bridge runs at a heavy skew, the bridge has a distinct look. The approach spans are unusual, as they feature only two beams, similar to a deck girder.
During 1930 and 1931, the Rock Island built a new alignment between Mosby and Lawson. As a joint agreement, the Milwaukee Road rebuilt their route through Mosby and the two shared operations of a single mainline. To the east of this location, the railroads used a split mainline.
This bridge is also considered to be a DM&E bridge instead of Union Pacific, as DM&E does the maintenance on this segment of track.
Overall, the bridge appears to be in good condition, with no major deterioration noted.

The author has ranked this bridge as being locally significant, due to the common designs.
The photo above is an overview.

Citations

Source Type

Source

Build Date Plaques
Railroad Line History Source ICC Valuation Information, Compiled by Richard S. Steele