Homewood, Shadyside and Oakland were railroad suburbs for wealthy factory owners and bankers.
Early railroad suburbs generally followed the Pennsylvania Railroad to the east of Pittsburgh: Shadyside, East Liberty and Wilkinsburg. Several other railroad lines were built and converged in Downtown Pittsburgh. Stations became the focal points of villages that developed along the lines, including Avalon, Ben Avon, Crafton, Homewood, Rosslyn Farms, Sewickly, Shadyside and Thornburg.
Trolley Suburbs
In the 1890s, the electric trolley, or streetcar, provided the region’s first extensive public transportation. The trolley provided cheap, reliable short-distance transportation, allowing people to travel in 10 minutes what would otherwise take 30 minutes to walk. The trolley enabled middle-class people to live outside the city and commute to their jobs in the city.
Unlike much larger trains, trolleys were seemingly everywhere and took you wherever you wanted to go. Thus, the electric trolley made modern urban growth possible. Development occurred in outlying rural villages and along new residential and commercial corridors created along the routes. This growth took place in a predominantly fingerlike settlement pattern.
Through the latter part of the 19th century, the City of Pittsburgh grew rapidly to the east, the north and on the South Side. The County’s trolley suburbs include Aspinwall, Bellevue, Brentwood, Brookline, Castle Shannon, Dormont, East Liberty, Mt. Lebanon, Oakmont, Whitehall and Wilkinsburg. Construction of a trolley tunnel through the base of Mount Washington in the early 1900s led to further development in the South Hills.
Trolley lines were built primarily to handle the rush hour crowds of workers going to and from their jobs. So that cars would not be idle on evenings and weekends, trolley owners developed attractions at the end of many lines. Kennywood was founded by the Monongahela Street Railway Company as a trolley park.
During its peak, Pittsburgh Railways, the dominant transit agency, had over 600 miles of track on nearly 100 trolley routes.
Automobile Suburbs
In the early 1900s, new roads for automobiles led to development over a wider area than was stimulated by the trolley. The automobile was new, affordable and convenient. As their economic circumstances improved, people opted for private, rather than public transportation. Trolley ridership began to decline.
Development became more dispersed as workers were able to commute longer distances to work and as businesses moved away from the urban core. With commuters no longer needing to live within walking distance of a trolley line, residential suburbs could be built at lower densities that afforded more privacy. The car influenced both the physical layout of developments and the daily lives of residents.
Mount Washington presented a formidable barrier to southern expansion. However, once the Liberty Tunnels were constructed, the automobile accelerated suburbanization in the South Hills and neighborhoods filled in the areas between trolley suburbs.
The Lincoln Highway, the nation’s first coast-to-coast highway, was constructed through Pittsburgh in the 1930s.
The Great Depression and World War II slowed housing construction, resulting in a severe housing shortage. When prosperity returned after the war, a strong housing demand, along with favorable public policies, helped create the suburban explosions of the late 1950s-1970s. Suburban housing developments spread across the landscape on a scale never before imagined.
Large residential subdivisions were connected to the city by arterials and freeways. Allison Park, Bethel Park, Churchill, Monroeville, Mount Lebanon, North Hills, Penn Hills, Pleasant Hills, West Mifflin, West View and Upper St. Clair are among the communities that developed as automobile suburbs.
In the 1950s and 60s, drive-in restaurants and strip shopping centers developed along major roadways. In the 1980s, suburbanization extended further outward to Cranberry and Moon townships. Generally, residents of the outer suburbs don't commute into Pittsburgh at all, but rather to a suburban office or industrial park.
Today, regional shopping centers, particularly the mega-retail complexes that have been newly built, are located along the County’s major roadways, such as the parkways, Route 28, and Interstates 79 and 279. Some are part of mixed-use