The level of street-network sprawl in new development in Semnan was at its lowest in 1976-1990. To get a sense of how street development has changed in Semnan, we can consider three of its most populous cities: Mahdishahr, Shahrud and Semnan. Out of the three cities, Mahdishahr and Shahrud do not follow the same trend as the region. The level of street-network sprawl in new development in Mahdishahr fell steadily. The level of street-network sprawl in new development in Shahrud was at its lowest in 1991-2005.

As of 2020, the city with the most disconnected street network in Semnan is Semnan with an SNDi of 3.18, which is moderately connected. Conversely, the most connected city is Mahdishahr with an SNDi of 2.64, which is relatively well-connected. See trends for these cities: Mahdishahr, Semnan

The level of street-network sprawl in the aggregate network in Semnan was at its lowest in 1991-2005. To get a sense of how the aggregate street network has changed in Semnan, we can consider three of its most populous cities: Mahdishahr, Shahrud and Semnan. Out of the three cities, Mahdishahr and Shahrud do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Mahdishahr fell steadily. The level of street-network sprawl in the aggregate network in Shahrud fell steadily.