
Above, the First Avenue subway station (which is an elevated station, but it’s on the part of the line we call the “subway”) from First Avenue. Below, a CAF 4300-series Blue Line car comes in from the Panhandle Bridge.



The interior of a 4200-series Siemens car. These were the “LRVs” (for “light-rail vehicles,” which is better than “trolleys” or “streetcars” because it has three more syllables) that were ordered in the 1980s when the subway was built, and then refurbished to match the new 4300-series cars from CAF.
Architect Rob Pfaffman gave us just about the most whimsical subway entrance old Pa Pitt has ever seen, and he has been places and seen things. The whole station is unique, above and below the ground. There are no right angles, or at least very few. Yet from a practical point of view, nothing is confusing, and the station works very well for its intended purpose, which is to get us into a trolley quickly.
Steel Plaza was designed in the 1980s, and its architecture is an interesting combination of Brutalist and Postmodern styles—the two most prominent materials are raw concrete and polished granite. It was built as a junction station, where the main subway line met the spur to Penn Station, which is not in regular service these days. In the picture below, the main line is on the left, and the spur is on the right.
The Station Square subway station was built in the 1980s, when the streetcars were diverted from the Smithfield Street Bridge to the Panhandle Bridge and into the subway downtown.
Even though it’s clearly above the ground, this is the end of the section of combined trolley lines that Pittsburghers call the “subway.” From here the outbound streetcars go underground into the Mount Washington tunnel, but that’s not a subway. That’s just trolleys running underground. You need to be a Pittsburgh native to follow the logic.