Although much reduced in scope, 21ST ST crossing, also known as
Alton Junction, was effectively the last interlocking station on the Pennsylvania Railroad's main line between Pittsburgh and Chicago and once trains navigates its
complex trackwork, they would enter the ream of Chicago Union Station. That should have been a fairly simple 2x2 diamond crossing of the PRR and the
Chicago and Alton was blown up by the four-tracks of the
Chicago and Western Indiana, a terminal railroad owned equally between the Erie, Monon, Wabash, Grand Trunk Western and Chicago & Eastern Illinois to reach Chicago's
Dearborn Station. This resulted in a staggering
26 diamonds along with a pair of double slip ladders, but with the closure of Dearborn in 1971 the C&WI tracks evaporated leaving empty fields in their place. The good news is that those fields were converted into
Ping Tom park, allowing anyone to get an up close view of the passenger action that still flows through the interlocking. The bad news, at least for me, is that Chicago in December gets pretty dang cold. You on the other hand can sit back and enjoy
the photos I took (
mirror ) from the comfort of your own house.
After getting up early I put on as many layers as practical because the temperature stood at 8 degrees. 21ST ST is accessible via the CTA Red Line's Cermak-Chinatown station and after a transfer from the Blue Line I was delivered by 5000-series car #5214.
Federal Junction north of the station allows Red Line trains access to the Orange Line and the Loop in case of service disruptions or equipment transfers.
Cermak-Chinatown is also adjacent to the METRA Rock Island District tracks where I caught MP36PH-3C #423 and F40PH-3 #111 coupled ahead of Veterans F40PH-3 #120.
One thing that hasn't changed about 21St St crossing is the South Branch Drawbridge that marks the spiritual end or beginning to several Amtrak long distance routes. In the summer this sees frequent raisings due to the low clearance and high volume of boat traffic on the Chicago River.
The southwest corner of the park provides an unobstructed view of the remaining diamond crossing as well as the connecting tracks for Lincoln Corridor trains and Illinois Central route trains. As a further bonus, the CTA Orange Line passes overhead on the elevated trackway.
Speaking of downstate Illinois, Amtrak Saluki Train 391 was departing on its outbound trip to Carbondale. Due to the lack of a direct connection to the former IC main line, all downstate trains have to make a reverse move out of Chicago Union Station. With the
Saint Charles Air Line out of service for reconstruction, these trains were changing direction on the Norfolk Southern Chicago Line south of the station. Today's consist included P42DC #63 and no fewer than 3 deadhead Sightseer Lounge cars needed to make up axle count and car weight minimums on the route.
21St St is also used by METRA
Southwest Service and
Heritage Corridor trains, although the latter is an extremely limited peak period operation. Here a Southwest Service train with gallery cab car #8579, 1960's vintage Budd gallery coach #784 and F40PHM-3's #190 and #210.
This was followed by an outbound Southwest Service train with F40PH-3 #179 and cab car #8445.