“Transit-Oriented Development” is a favorite catch phrase among urban planners. In the early twentieth century, it was just the way development happened. Most people used streetcars to get to work, to shopping, and to all their amusements, so of course development and transit had to go together. Here we see a typical pattern: a main spine street—in this case, Broadway Avenue in Dormont—divided in two parts, with a broad median for trolleys. Many neighborhood main streets were built this way. Red Line trolleys still run here in Dormont, and Silver Line trolleys on a similar plan in Bethel Park.

Many streets in the Pittsburgh area used to have a median where the streetcars ran in a separate right-of-way: Center Avenue in West View and Brookline Boulevard in Brookline are two examples. Broadway in Dormont is the only one where the streetcars still run in the median. We could also count the Silver Line through Bethel Park as a broad instance of the same kind of development, although the streets between which the trolleys run have different names.