Subdivisions, Monongahela Style
Friday

– photo by Mitch Waxman
Yes, that is a Rush reference for the title, but Mr. Peart and his fellows have no other connection with this post.
These captures are from midway along a short walk I was taking, after riding on the T light rail to the center of things. Everything just kind of lined up for me when that CSX freight train appeared, just as a T train set was transiting over the Panhandle Bridge from the South, heading toward the so called Golden Triangle of Pittsburgh.
This felt great, especially since I had taken a ten minute sit down on the Smithfield Street Bridge, after experiencing a bunch of discomfort in the healing but still quite tender ankle, and I would have missed the shot if I hadn’t needed to sit down. I’m as sick of experiencing this ankle business as I’m sure most of you are hearing about it, but this injury taken a fairly central position in, and had a substantial impact on my life for the last six months. I try to ‘keep it real’ here, and as the ankle has been and will continue to be a big part of my deal right now… Y’know…
Oww!

– photo by Mitch Waxman
These are the same tracks along the Monongahela River which have become kid of regular players since I moved out here to Pittsburgh. CSX’s Pittsburgh Subdivison is the official name for this infrastructure. The lead locomotive is CSX#789, and it had another ‘DPU’ (diesel power unit) in line right behind it. I had used my snazzy scanner radio to listen in on the fog of radio communications, and when I heard an automated defect detector (which is about a mile away, I reckon) describe #789 as having 335 healthy axles, I got busy figuring out the proper exposure and all the other stuff too. That’s exactly why I bought the radio, darn it!
CSX #789 was built as an ‘SD70MAC’ but was upgraded to an ‘EMD SD70MAC’ by GM’s Electro-Motive Diesel division. It’s all a bit confusing, but as far as I’ve been able to work it out, the thing was created in the 1990’s.

– photo by Mitch Waxman
I’ve got a few odds and ends from this walk which I’ll show you next week, but I’m going to end this week on the shot above. Before you ask, automobiles. That’s likely what’s in the train’s cargo cars – automobiles.
Back next week.
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That’s an incredible shot! You did misidentify that CSX locomotive though, which is really easy to do since CSX’s numbering system has changed a lot over the years. As opposed to an EMD model like a locomotive in the SD70 family, that locomotive is most likely an AC44. A good way to tell is the nose, with most EMD models having a flat area on the nose.
BraydenTakesPhotos
March 7, 2025 at 5:13 pm
Thanks for the info. I’m still fairly new to the train game (if you want to talk tugs or shipping in ny harbor, that’s a different wheel house) and any mentoring or correction is always welcomed.
Mitch Waxman
March 7, 2025 at 5:52 pm
“I’m as sick of experiencing this ankle business as I’m sure most of you are hearing about it”. Speaking for myself, not at all.
dbarms8878
March 7, 2025 at 9:10 pm