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

How do development practices in Alabama fare in comparison to others in United States? Most recently in 2006-2020, street construction in Alabama was the 42nd-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 Alabama has become more connected. Alabama ranked 27th in 1975, 28th in 1976-1990, 31st in 1991-2005 and 42nd in 2006-2020.

As of 2020, the city with the most disconnected street network in Alabama is Montgomery with an SNDi of 3.12, which is moderately connected. Conversely, the most connected city is Birmingham with an SNDi of 2.35, which is well-connected. See trends for these cities: Birmingham, Montgomery

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

To date, Alabama is the 32nd-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, the street network in Alabama has become more connected. Alabama ranked 27th in 1975, 30th in 1976-1990, 33rd in 1991-2005 and 32nd in 2006-2020.