The interlocking and junction known as ZOO and its historical territory perhaps doesn't get as much coverage as it deserves due to being in a part of Philadelphia that lacks access to good rail transit and while also being unpleasant to drive to. One of ZOO's more interesting locations is often known as 36th St Junction where Amtrak trains bound for 30th St Station's lower level split from the Main Line that send SEPTA trains to 30th St Station's upper level. In the late summer of 2023 I the opportunity to go out with a friend who knows how to navigate Philly's bus system to reach 36th St junction and spend some time
getting photos there (
mirror ).
Like many of my rail adventures this one started off in the Baltimore area, but unlike many recent trips I caught my Amtrak train from my old stomping grounds of Baltimore Penn Station. I was connecting to Amtrak there as I wanted to get some pics of the new B&O style CPL dwarf installed as part of the new Track F platform.
I had arrived on a MARC local pulled by MP36PH-3C #16 and would connect to a northbound Acela led by power car #2014.
I was lucky enough to get on one of the 2 Acela round trips with a beverage cart. I saw a woman order a $10 glass of white wine and get pretty much a full 16oz solo cup pour.
SEPTA Silverliner IV #408 at 30th St.
One of the most iconic features of 36th St Jct is the double cantilever signal located at the west end. Still controlled from the 1930 vintage US&S interlocking machine in ZOO tower, trains to Suburban Station head straight while trains to 30th St station's lower lever diverge.
Westbound SEPTA R5 comprised of Silverliner IV's including #422 and #367, passing through the junction on main track #4.
ZOO used to see a lot of freight traffic, but today this has been reduced to the single track Trenton Line, now run by CSX and completely separated from Amtrak. Here CSX ES44AC #947 and CM44AC #7000 head eastbound through the old limit of ZOO.
Eastbound R5 train with Silverliners IV #396 and #336
The great ZOO tower was recently given a fresh set of windows and reproduction PRR keystone nameplates.
An inbound R5 with Silverliner IV #436 heading on track #1 towards the 30th St upper level.