Monday, June 29, 2020

1927+1966 Cicero Avenue Bridge over the CS&SC in Chicago, IL

(Bridge Hunter; Historic BridgesSatellite)

CS&SC = Chicago Sanitary & Ship Canal

Historic Bridges indicates this bridge was designed by Strauss Engineering instead of the City of Chicago.

If you can find a place to park, it is easy to take photos of railroad bridges from road bridges. But the converse is not true. So I'll use a satellite image.
3D Satellite

MWRD posted
A soil boring crew works along the Chicago Sanitary and Ship Canal collecting samples for the foundation of the north abutment of the soon-to-be-built Cicero Avenue Bridge in Chicago, Illinois, on August 12, 1921.
[Are the piles still left over from the digging of the canal?]
Dennis DeBruler: This is also a nice view of the powerline that went from the Lockport Powerhouse to the switchyard building just west of Western Avenue.
MWRD posted on Jan 29, 2023

MWRD posted
The Cicero Avenue Bridge construction site on July 2, 1925, viewed looking north from the south side of the Chicago Sanitary and Ship Canal.
Dennis DeBruler According to Historic Bridges, the bridge was opened in 1927 with just two pony trusses. The third one was added in 1966 when the width was doubled. That is why the bridge looks so narrow in this photo.
https://historicbridges.org/bridges/browser/?bridgebrowser=illinois/cicero/
That expansion must mean that the trusses were overdesigned by at least a factor of two because the center truss now holds the weight of a whole leaf rather than just half a leaf.

MWRD posted
A view to the south showing flooring installation for the Cicero Avenue bridge over the Chicago Sanitary and Ship Canal on July 13, 1926. 
 
MWRD posted
A view to the southeast showing flooring installation for the Cicero Avenue bridge over the Chicago Sanitary and Ship Canal on July 13, 1926. 

MWRD posted on Feb 22, 2023
A view to the north from the Cicero Avenue bridge over the Chicago Sanitary and Ship Canal on October 11, 1926, during work on the north approach to the bridge. The Sanitary District of Chicago (now MWRD) built the bridge between 1924 and 1925 and the south and north approaches to the bridge were constructed between 1926 and 1927.

MWRD posted
A view to the east showing workers paving the northern approach to the under-construction Cicero Avenue bridge over the Chicago Sanitary and Ship Canal on November 5, 1926.

MWRD posted
A view to the north showing construction of the Cicero Avenue bridge over the Chicago Sanitary and Ship Canal in Chicago, Illinois, on September 7, 1926. The bridge was completed in 1927.

MWRD posted on Jun 4, 2022
Dredging for a cofferdam on the Chicago Sanitary and Ship Canal prior to construction of a bridge at Cicero Avenue on July 18, 1924.

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