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100th Street Bridge

   


100th Street Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 11, 2006, September 7, 2011, and September 10, 2012
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Key Facts

Facility Carried / Feature Intersected
100th Street Over Calumet River
Location
Chicago: Cook County, Illinois
Structure Type
Metal Rivet-Connected Pratt Pony Truss, Movable: Double Leaf Bascule (Fixed Trunnion) and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1927 By Builder/Contractor: Ketler-Elliott Company of Chicago, Illinois and Engineer/Design: City of Chicago

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
233 Feet (71 Meters)
Structure Length
326 Feet (99.4 Meters)
Roadway Width
38 Feet (11.6 Meters)
Spans
1 Main Span(s) and 4 Approach Span(s)
NBI Number
16604226833

Historic Significance Rating (HSR)

Bridge Documentation

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

View A Historical Article About Charles Fitz Simons

Charles Fitz SimonsThis bridge is an unaltered, still functioning, and excellent example of a traditional Chicago bascule bridge on the Calumet River. Its trusses follow a similar design to some of the other bascule bridges on the Calumet River as well as on the Sanitary and Ship Canal. The bridge retains its original, handsomely decorated bridgetender buildings and the historic integrity of the trusses is good as well. It would appear that the original pedestrian railings have been replaced however.

The Ketler-Elliott Company constructed the superstructure, while the Fitzsimons and Connell Company constructed the substructure. A photo of founder Charles Fitz Simons is shown to the right.

Thanks to Tom Winkle for providing boat transportation to assist in the photo-documentation of this historic bridge.

Rivet ForgeSide Note: Heating Rivets In The Field

Truss bridges with riveted connections like the 100th Street Bridge required riveting in the field where the members of the truss were riveted together at the connection gusset plates. In the field, rivets would be heated in a portable forge. One of the most common types is shown to the left, with a diagram of the blower for this forge shown to the right. Larger forges were also used to efficiently heat larger quantities of rivets, and these were called rivet furnaces. A few examples from the early 20th Century are shown below.

Portal Rivet FurnacesRivet Forge Blower Diagram

Main Plaque

WM HALE THOMPSON
MAYOR
RICHARD W. WOLFE
COMMISSIONER OF PUBLIC WORKS

LORAN D. GAYTON
CITY ENGINEER

THOS G. PIHLFELDT
ENGINEER OF BRIDGES
EDWARD F. MOORE
DEPUTY COMMISSIONER OF PUBLIC WORKS

MYRON B. REYNOLDS
ASSISTANT CITY ENGINEER

DONALD N. BECKER
ENGINEER OF BRIDGE DESIGN

CHICAGO PLAN COMMISSION

BENNETT PARSONS & FROST - CONSULTING ARCHITECTS

CHICAGO CHAPTER OF AMERICAN INSTITUTE OF ARCHITECTS

ILLINOIS SOCIETY OF ARCHITECTS

CHICAGO ART COMMISSION


CLARENCE S. ROWE
ENGINEER OF BRIDGE CONSTRUCTION

FITZSIMONS & CONNELL DREDGE & DOCK CO.
SUBSTRUCTURE

NORWOOD-NOONAN CO.
ELECTRICAL EQUIPMENT
FRANK A. BERRY
RESIDENT ENGINEER

THE KETLER-ELLIOTT CO.
SUPERSTRUCTURE

RALPH H. SIMPSON CO.
HOUSES & ENCLOSURES

JAMES J. BARRETT - PLUMBING

1927

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Historic Bridges of Chicago and Cook County

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Complete Bridge List

Chicago and Cook County are home to one of the largest collections of historic bridges in the country, and no other city in the world has more movable bridges. HistoricBridges.org is proud to offer the most extensive coverage of historic Chicago bridges on the Internet.

Chicago / Cook County Bridge News

October 2015 - Patrick T. McBriarty, author of Chicago's River Bridges, informs HistoricBridges.org that in recognition for the "outstanding and original reference work that will support future scholarship in the history of technology", the book was awarded the biennial Eugene S. Ferguson Prize by the Society for the History of Technology (SHOT) at the SHOT Annual Meeting's awards banquet. See press release. This is the third award for this book. Order Now Direct From The Publisher! or order on Amazon.

October 23, 2015 - The Franklin Street Bridge celebrates its 95th Anniversary. Please view this announcement prepared by Chicago Loop Bridges or view it on the Chicago Loop Bridges Website.

September 2015 - Fall Bridge Lift Season is Underway. View Schedule.

May 2015 - Michigan Avenue Bridge celebrates its 95th Birthday this month! Click here for a news article.

October 2014 - A visit to Chicago revealed that the Van Buren Street Pedestrian Bridge was not demolished, but instead extensively rehabbed. The railings are new, but replicate the original design. The concrete encasement was removed and not replaced, and instead the exposed riveted steel beams have been painted. The riveted beams look quite nice, and given the condition of the bridge prior to the project this seems like a good outcome. In other news, the rehabilitation and repainting of the La Salle Street Bridge is ongoing, and the project to extend the Chicago Riverwalk under additional bridges on the Main Branch is continuing.

September 2014 - Chicago's dubious distinction of offering numerous boat tours that pass under the bridges but offer narration only of the buildings has ended with the start of a Wendella tour that focuses on bridges! Information is here.

July 29, 2013 - A project study has been initiated for the reconstruction of historic North Lake Shore Drive. This project puts a large number of historic bridges at risk for demolition and replacement. However, it could also be an opportunity to rehabilitate the bridges. Visit the project website.

May 15, 2013 - The Ashland Avenue Bridge over North Branch Chicago River has been recommended for Chicago Landmark designation by the Chicago Art Deco Society.

April 30, 2013 - Illinois Landmarks has included Chicago's Bascule Bridges as one of their Top 10 Most Endangered Historic Places. View The Official Page.

General Chicago / Cook County Bridge Resources

Chicago's Bridges - By Nathan Holth, author of HistoricBridges.org, this book provides a discussion of the history of Chicago's movable bridges, and includes a virtual tour discussing all movable bridges remaining in Chicago today. Despite this broad coverage, the book is presented in a compact format that is easy to take with you and carry around for reference on a visit to Chicago. The book includes dozens of full color photos. Only $9.95 U.S! ($11.95 Canadian). Order Now Direct From The Publisher! or order on Amazon.

Chicago River Bridges - By Patrick T. McBriarty, this is a great companion to Holth's book shown above. This much larger book offers an extremely in-depth exploration of Chicago's movable highway bridges, including many crossings that have not existed for many years. Order Now Direct From The Publisher! or order on Amazon.

View Historic American Engineering Record (HAER) Overview of Chicago Bascule Bridges (HAER Data Pages, PDF)

Chicago Loop Bridges - Chicago Loop Bridges is another website on the Internet that is a great companion to the HistoricBridges.org coverage of the 18 movable bridges within the Chicago Loop. This website includes additional information such as connections to popular culture, overview discussions and essays about Chicago's movable bridges, additional videos, and current news and events relating to the bridges.

Additional Online Articles and Resources - This page is a large gathering of interesting articles and resources that HistoricBridges.org has uncovered during research, but which were not specific to a particular bridge listing.

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Photos and Videos: 100th Street Bridge

Available Photo Galleries and Videos

Click on a thumbnail or gallery name below to visit that particular photo gallery. If videos are available, click on a video name to view and/or download that particular video.

 
View Photo Gallery
Structure Overview
Original / Full Size Photos
A collection of overview photos that show the bridge as a whole and general areas of the bridge. For the best visual immersion and full detail, or for use as a desktop background, this gallery presents the photos for this bridge in the original digital camera resolution.
View Photo Gallery
Structure Details
Original / Full Size Photos
A collection of detail photos that document the parts, construction, and condition of the bridge. For the best visual immersion and full detail, or for use as a desktop background, this gallery presents the photos for this bridge in the original digital camera resolution.
View Photo Gallery
Structure Overview
Mobile Optimized Gallery
A collection of overview photos that show the bridge as a whole and general areas of the bridge. View the photos for this bridge in a reduced size which is useful for mobile/smartphone users, modem (dial-up) users, or those who do not wish to wait for the longer download times of the full-size photos. Alternatively, view this photo gallery using a popup slideshow viewer (great for mobile users) by clicking the link below.
Browse Gallery With Popup Viewer
View Photo Gallery
Structure Details
Mobile Optimized Gallery
A collection of detail photos that document the parts, construction, and condition of the bridge. View the photos for this bridge in a reduced size which is useful for mobile/smartphone users, modem (dial-up) users, or those who do not wish to wait for the longer download times of the full-size photos. Alternatively, view this photo gallery using a popup slideshow viewer (great for mobile users) by clicking the link below.
Browse Gallery With Popup Viewer
View Video
Bumpercam: Westbound Crossing
Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
View Video
Bumpercam: Eastbound Crossing
Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

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