
Except on foot. This is Louisa Street in Oakland, a typical Pittsburgh street interrupted by a stairway.

Except on foot. This is Louisa Street in Oakland, a typical Pittsburgh street interrupted by a stairway.
The Wabash Bridge had a lot of bad luck. It was built from 1902 to 1904; when it was almost finished, it collapsed, killing ten workers. When it opened, it served Jay Gould’s spectacularly expensive Wabash Railroad, which went bankrupt in four years. The gorgeously ornate Wabash Terminal downtown continued to serve passengers until 1931, when the last passenger train rolled out, and it became a gorgeously ornate freighthouse. In 1946, the Wabash Terminal and the aerial railyard that served it burned, leaving the Wabash Bridge entirely useless. It was torn down in 1948, with the steel melted down and reused in the Mansfield Bridge between McKeesport and Dravosburg.
But the two stone piers that supported the bridge were left, and they are still here today. Occasionally they make good platforms for flags during the Regatta or some such festival. Otherwise, they just stand there. There have occasionally been proposals to put a new bridge on them to connect the Wabash Tunnel with downtown again, most famously for the planned Skybus transit system that almost but not quite happened in the 1970s. But nothing comes of them, and probably nothing will come of them unless some very expensive reconfigurations are done at the south end of the tunnel to connect it with something more useful than Woodruff Street.
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.
Belgian block set aside at a hole-digging project in a street in Oakland. What Pittsburgh needs is more holes in streets.
This pleasing Victorian Romanesque commercial building was probably pushing the limits of height for its era: it was built in 1884, just before the dawn of the skyscraper age. Skyscrapers had not yet posed the problem of how to treat floor after floor in the upward rise of a building; the solution, even in the most ornate Beaux-Arts skyscrapers, turned out to be to treat the middle floors as identical repetitions (compare the later Renshaw Building to the left). That has not been done here. There are eight floors, and each of them different in some way.
This tiny building has a simple but rich front; we suspect that the projecting roof was originally covered with green tile, which would have set off the Arts-and-Crafts stained glass even more.
A simplified Italian Renaissance style, with the ornamentation kept to the minimum. Note the variant spelling of the name on the nameplate over the entrance: when this apartment block was put up, the spelling of Centre Avenue had not been standardized to the British spelling preferred by real-estate developers.
This small apartment building on Centre Avenue is named for its most obvious and distinctive feature: a two-storey Doric colonnade that has just been freshly painted.
Addendum: According to the city architectural inventory (PDF), the Colonnade was built in 1907.
This is a typical Pennsylvania I-house with an attractively gingerbreaded front porch. Cranberry Township in Butler County is one of the hottest development zones in the suburbs, but in among the townhouses and shopping centers there are still active farms, and a considerable number of old farmhouses from the middle 1800s. This one could use some touching up here and there, but it might be worth the expense.
The silo in the background at right belonged to a barn that has collapsed.