The level of street-network sprawl in new development in Maine followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Maine, we can consider one of its most populous cities: Portland. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Portland peaked in 1991-2005.

As of 2020, the city with the most disconnected street network in Maine is Portland with an SNDi of 2.85, which is relatively well-connected. Conversely, the most connected city is Portland with an SNDi of 2.85, which is relatively well-connected. See trends for these cities: Portland, Portland

The level of street-network sprawl in the aggregate network in Maine rose steadily. To get a sense of how the aggregate street network has changed in Maine, we can consider one of its most populous cities: Portland. Disconnectivity in the most populous cities in Maine follow the same region trend.