This is a swing bridge over the Sanitary and Ship Canal.  It is located between the south Central Avenue Bridge and the Harlem Avenue Bridge.  It was built in 1899.  It is a pin connected Pratt through truss fabricated by the the Keystone Bridge Company.  The Carnegie Steel Company erected the superstructure.

It is a center pivot swing bridge.  It measures 372 feet 6 inches in length. It rests on limestone abutments.  The limestone center pier measures 33 feet 8 inches in diameter.  It supports  a 28 foot turntable.  The bridge has two tracks.  It is still operational.

This is a railroad bridge over the Chicago Sanitary and Ship Canal.  It is located near Bedford Park Cook County, Il.  It is located between the LaGrange Rd and the Archer Avenue traffic bridges.   Railroads using this bridge include the Indiana Harbor Belt Line and the Soo Line.    This was originally a swing bridge.  Date of construction is unknown.  The span between the center pier and the north bank collapsed in  1963.  This was replaced by by a set of short deck girder bridges.   The remaining section between the center pier and the south bank was left in place.    Subsequently this was replaced with  a truss bridge.  This is a double track bridge.  Total length of the bridge is 340 feet.

 

This is a swing bridge between Kedzie Avenue and Pulaski Road.   Date of construction is estimated to be about 1897.  The substructure contractors were the Mc Arthur Brothers and Winston and Company.  Carnegie Steel Company was the superstructure contractor.  Estimated cost of the bridge was $64,961.97.  Estimated weight of the structure was 1,519, 183 pounds.

This is a singe span bridge.  It has two tracks.   Its length  is 322.7 feet.  The total structure length is 327.7 feet.  The bridge rests on limestone abutments on the ebankments.  Center pier is concrete and limestone. The bridge rotated on the center pier. It is currently fixed and locked in position.

The bridge originally was built for short line Illinois Northern Railroad (part of the Santa Fe System).  It is currently used by the Illinois Central.

This lock is located between the waters of Lake Michigan and the Chicago River.   It was part of the project to reverse the course of the River.    This was built by the Metropolitan Water Reclamation District of Greater Chicago.  It was built between 1936 and 1938.  It was originally built to prevent contamination of Lake Michigan water by the polluted water of the Chicago River.  Currently it separates Chicago River Storm water from the Lake.   It also regulates the amount of Lake water entering the River.  In 1984, the operation and maintenance of the lock was transferred to the Army Corps of Engineers.

The lock is 600 feet long and 80 feet wide.  It is 22 feet deep.  Filling and emptying the lock occurs through a partially opened gate.  The lock maintains a 2 to 5 foot water height differential between the Lake and the River.

The control house was replaced in 2007.  The lock gates were renovated in 2011.  The lock is operated 24 hours a day.

This is a swing  bridge over the Sanitary and Ship Canal. It is the longest on the  ship canal.  It is located between Kedzie Avenue and California Avenue in Cicero, Illinois.   It is also known as the Illinois Central Swing Bridge # 2.  It was built in  1899.  Its design is Pratt through truss.   The sub structure contractors were the McArthur Brothers and Winston and Company.  The superstructure contractor was the Toledo Bridge Company.  It’s cost was $110,644.  The completed bridge was 2,511,140 pounds. It rested on a central pier.  The bridge pivoted on this pier to create navigable channels on either side.

Its length is 479 feet.   Railroads having used the bridge include CN, Chicago Madison and Northern RR., and the Illinois Central Railroad.

The 18th street railroad bridge is actually 2 bridges.  One is called the Saint Charles Air Line Bridge.    This is currently owned by the CN railroad.  It is the southern most of the two bridges.  It was originally 260 feet in length.  It was  built in 1919.  It was designed to be modified when the Chicago River straightening project was completed.

The bridge was was designed by the Strauss Bascule Bridge Company.  It was fabricated by the American Bridge Company.  It was a double track structure.  It was assembled in its original location by the Ferro Construction Company.    The original substructure was built by the Foundation Company of New York.

When the river straightening project was completed, the bridge was moved and shortened in 1930.  E.J. Albrecht Company built the relocation substructure.  The Stroebel Steel Construction Company dismantled and and re-erected the superstructure in its location.  The bridge was shortened to 220 feet.  This  bridge  is still operational.

The adjacent bridge was commissioned  by the Baltimore and Ohio Railroad.   It was constructed by the American Bridge Company.    It contained two tracks.  It is a single leaf Strauss trunnion bascule bridge.  It measures 186 feet in length.  Its supports are concrete.

 

The second bridge over the Cal Sag Canal is the Archer Avenue Bridge.  This is located in Lemont.  It is a Pennsylvania Truss Bridge with a west side pedestrian walk.  It was built in 1934.  It is 507 feet in length and 43.9 feet in width.  It was renovated in 1997.  It is currently painted blue.

Photos added 4/9/2018

This is a view of this bridge from the Archer Avenue Bridge.

 

This is a view of this bridge from a boat at the junction of the Sanitary and Ship Canal and the Cal Sag Canal.

This is the first bridge across the Cal Sag Canal traveling from west to east.  It is currently being used by the CN railroad.  Other railroads using this bridge include  Amtrak and Metra.   The builder is unknown.  Date of construction is unknown.   It is 395 feet in length.  Its design is typical of railroad bridges on the Cal Sag Canal.  It is riveted metal truss technology.

     This unusual bridge crosses the Sanitary and Ship Canal west of the south Western Avenue Traffic Bridge.  It was constructed in 1901 and 1909-1910. The construction was done in 1901 by the Scherzer Rolling Lift Bridge Company.   The 1909-1910 construction was done by the Chicago Bridge and Iron Works.

     The original contract was awarded to Scherzer.  Its design was four parallel double tracked, double leaf bridges.  This was to accommodate multiple railroad lines that crossed the Ship Canal at this site.

     In 1908, Chicago Bridge and Iron Works was awarded a contract to erect a new bridge using existing approach spans and piers.  The new piers were placed adjacent to the old ones.

    The bridges are four parallel single-leaf Scherzer Rolling Lift Bascule bridges.  Each bridge has two sets of tracks.  The lift bridges are 140 feet in length.  The original lines using the bridges were Pittsburgh, Cincinnati, Chicago and Saint Louis Railroad,the Illinois Stock Yards and Transit Railroad, Chicago and Northern Pacific Railroad.  The supporting piers are limestone covered with concrete.

     Other railroads that have used these bridges include Baltimore and Ohio Terminal Railroad, CSX Railroad, CN Railroad, Chicago Junction Railroad, Norfolk Southern Railroad..

     The two western spans are no longer operational.

This railroad lift bridge is the only remaining one on the Chicago River.  It was originally built for the Pennsylvania Railroad.  It is located near Canal St.

It was constructed in 1915.  It replaced an existing bridge. It is now operated and maintained by Amtrak.

The bridge was designed by Waddell and Harrington.  Pennsylvania Steel Company fabricated the main span.  This weighed 1500 tons.  It contained two tracks.  It was 272 feet.  The two lift towers were 195 feet in height.  They rested on concrete piers.  The original bridge tender cabin rested on the top of the main spam.  The bridge is now controlled from a location near the base of the bridge.

Much of the information was found in HAER IL–112