A satellite link is in a description of
the current Blue Island configuration.
Tc Iskender Pinar
posted two photos with the comment: "
Blue Island's iconic double diamond on December 5, 1911 - before the digging of the Cal Sag Channel created the need for 5 bridges at this location. The bridges that are currently in place were constructed in the 1960s to span the widened Cal Sag Channel."
Tom Winkle The Sag was originally a "single track" canal; to save money, the original dig was only wide enough to accommodate a boat and six barges, with widely spaced out areas along it's length for meets and overtakes, wet "turnouts", if you will. IIRC, widening the whole canal started in the late forties or early fifties.
Tom Winkle The view from below... Iowa Interstate waiting to get into the yard. https://flic.kr/p/98eFbn
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The Cal-Sag was dug between 1911-22 (
Wikipedia)
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MWRD posted
Dennis DeBruler Slip-form concrete construction was developed to build uniform vertical structures such as grain silos. It looks like MWRD turned slip-form construction 90 degrees to construct horizontal structures.
Workers help to position movable concrete forms during construction of the Calumet-Sag Channel on September 8, 1915, viewed to the west from an area between La Grange Road and Illinois Route 83.
Joseph Obrien Just to think the fact that the Cal Sag canal would be widened again in the 50s. |
Scott Griffith posted two photos with the comment: "Nov 1920 Something i didn't know." Since this was posted in a B&OCT group, "our" would mean the B&OCT railroad.
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David Daruszka commented on Scott's posting
Stone Creek at the top, Little Calumet at the bottom in this map. |
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IHB32
Bob Lalich: Old GT crossing in Blue Island looking NW. The switches are the B&OCT-IHB junction. The tower can be seen in the next photo, IHB 33. |
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Paul Petraitis posted
[Note date of 1905.] |
In 1938 the junction had a much more rational design because there was a flyover north of the channel.
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Charles Geletzke Jr. posted Looking east at Blue Island, Illinois on May 10, 1988. The track in the extreme right was the GTW Westward Main Track. Moving to the left, the next two were the Indiana Harbor Belt (IHB), and the last two on the far left were the Baltimore & Ohio Chicago Terminal (B&OCT). The track up on the embankment was the former Rock Island. Oh yes, that was a GTW crossing tower. A great place to watch trains! (C. H. Geletzke, Jr. photo)
Charles Geletzke Jr. shared |
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Jerry Jackson commented on Charles' share 1988 IIRC. |
The tracks in the foreground belong to the IHB. The tracks to the left are the Grand Trunk.