The level of street-network sprawl in new development in Pennsylvania rose steadily. To get a sense of how street development has changed in Pennsylvania, we can consider three of its most populous cities: Philadelphia, Pittsburgh and Reading. Out of the three cities, Philadelphia and Pittsburgh do not follow the same trend as the region. The level of street-network sprawl in new development in Philadelphia followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Pittsburgh followed a zig-zag trend with an overall increase.

How do development practices in Pennsylvania fare in comparison to others in United States? Most recently in 2006-2020, street construction in Pennsylvania was the 25th-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has fallen; relative to other regions in United States, street construction in Pennsylvania has become more connected. Pennsylvania ranked 14th in 1975, 20th in 1976-1990, 24th in 1991-2005 and 25th in 2006-2020.

As of 2020, the city with the most disconnected street network in Pennsylvania is Bensalem Township with an SNDi of 3.98, which is sprawly. Conversely, the most connected city is York with an SNDi of 1.51, which is very well-connected. See trends for these cities: York, Bensalem Township

The level of street-network sprawl in the aggregate network in Pennsylvania rose steadily. To get a sense of how the aggregate street network has changed in Pennsylvania, we can consider three of its most populous cities: Philadelphia, Pittsburgh and Reading. Disconnectivity in the most populous cities in Pennsylvania follow the same region trend.

To date, Pennsylvania is the 14th-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has not changed. Pennsylvania ranked 14th in 1975, 16th in 1976-1990, 14th in 1991-2005 and 14th in 2006-2020.