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Bill and others:
I believe the first photo is the signal bridge at MP 27.04. The photo is looking eastward and the 4th track built is on the right. This bridge was constructed here in 1913 as a three track bridge. If you expand the photo, you can see that it now depicts
a three track bridge with a 14' extension on the right (south). The gusset plate extending slightly below the truss under the '2nd from the right' signal target was for the original diagonal brace between the truss and the tower in its original location.
The plans for adding the 14' extensions called for this gusset to be removed, but few if any were, making the 3 track bridges with extensions easily distinguishable from 4 track bridges. The extensions also had a slightly different lateral design from the
original bridges.
Also look at the signal target on the extreme right. It is identifiable as a 'tri-color' light signal with the green bulb lit on the upper left. The bi-directional signals for the two middle mains are also readily apparent.
Signal bridge 27.04 was re-spaced to MP 27.42 in the early 50's as part of the project to install cab signals, but the original solid north pedestal and the southerly two stem pedestal for the 1930 extension were still in place well after 2000.
Glen Haug
From: CBQ@groups.io <CBQ@groups.io> on behalf of William Barber <clipperw@gmail.com>
Sent: Thursday, December 10, 2020 9:22 AM
To: CBQ@groups.io <CBQ@groups.io>
Subject: Re: [CBQ] Just in passing ................
Leo,
In reference to your comments about the fourth main and the proposed elevated track structure between Chicago and Aurora, attached are two photos. The first shows the fourth main between Lisle and Naperville. This is a John W. Barriger photo taken
on one of his several railroad inspection trips. The second photo is an artist’s conception of what the proposed elevated structure would have looked like as it passed through Downers Grove. Both of these photos are available in the members only Flickr gallery
on the BRHS website.
Bill Barber
Gravois Mills, MO
Re: Just in passing ................
From: Leo Phillipp
Date: Thu, 10 Dec 2020 04:51:55 PST
The fourth main was built between Eola and Downers Grove in the late 20s(‘28 and ‘29) and was removed in ‘32 and ‘33 when the Great Depression hit. Besides evidence in employee timetables and track diagrams there is still one last remnant
at Downers Grove between Belmont and Main St. on the north side where a track runs parallel to the mains before swinging a bit northerly into what is left of the Downers Grove yard.
That’s short stretch is the last physical evidence of the fourth main. That is, other than bridge abutments at Salt creek and the Du Page river.
I do have a photo taken between Lisle and Naperville depicting the existence of the fourth in my collection. I think there’s a copy in the members only photo section of the BRHS website.
The elevation plans were resurrected after WWII in great detail(the BRHS archives has a copy ). The railroad and most the suburbs were anxious to proceed. But Berwyn and one other town(which I can’t recall at this moment) refused to
agree and the plan died.
Leo Philipp
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