Thanks for the insight Bill.
4 Track Configuration
I always thought the BSS was initially built w/4 tracks from Walnut-Locust to Erie with 4 tracks, and then 2 tracks to Fern Rock.
I can see how the Ridge trains would operate. They would take the ramps near Fairmount, diverge onto the local instead, and at Erie they would take the ramps and change ends above the main.
That operation was done seemingly due to capacity constraints.
- This makes me wonder, if the Walnut-Locust to Olney/Fern Rock corridor was built for 4 tracks, why did it take over 50 years for the express tracks to be laid entirely? Lack of demand, or funding?
I rode the BSS during rush hour numerous times on that stretch, it's hard to imagine how it would be with only 2 tracks as there's more service on the northern half (local, express & spur).
- Like how did meets between Spur/Express & Locals work? Did Spur/Expresses get ROW? I've been on expresses riding the yellows behind Spur trains, it would be hell riding yellows behind a local. Yikes!
- What exactly warranted the express tracks being built between Girard-Erie? Expansion of Spur and Express service?
It seems the Erie-Olney/Fern Rock stretch received express tracks because of RailWorks.
- Which makes me wonder, if SEPTA Regional Rail still used Reading Terminal, is it possible that Erie-Olney would still only have 2 tracks?
I'm trying to wrap my head around why a tunnel was built for 4 tracks, but operated with only 2 tracks for decades.
I'm imagining North Philadelphia station without express tracks, just big open spaces.
North Philadelphia
Also thanks for answering my previous question about North Philadelphia. I always thought it was weird how there's an local/express set up w/2 island platforms, but expresses passed there 99% of the time. I guess during the PRR/Reading heyday, that station was quite busy. However as intercity & commuter rail in that area dwindled, along with increasing crime, it became seldom used. I'm just surprised that it warranted the removal of crossover switches, like the service declined so much that a measure as such had to be taken. There's a giant gap in the concrete beams between the express tracks immediately north of the station, I figured that's where one of the switches used to be.