The level of street-network sprawl in new development in Boumerdès followed a zig-zag trend with an overall decrease. To get a sense of how street development has changed in Boumerdès, we can consider three of its most populous cities: Boumerdes, Khemis El Khechna and Bordj Menaiel. Out of the three cities, Boumerdes and Bordj Menaiel do not follow the same trend as the region. The level of street-network sprawl in new development in Boumerdes peaked in 1976-1990. The level of street-network sprawl in new development in Bordj Menaiel was at its lowest in 1976-1990.

As of 2020, the city with the most disconnected street network in Boumerdès is Khemis El Khechna with an SNDi of 5.4, which is very sprawly. Conversely, the most connected city is Bordj Menaiel with an SNDi of 3.2, which is moderately connected. See trends for these cities: Bordj Menaiel, Khemis El Khechna

The level of street-network sprawl in the aggregate network in Boumerdès peaked in 1976-1990. To get a sense of how the aggregate street network has changed in Boumerdès, we can consider three of its most populous cities: Boumerdes, Khemis El Khechna and Bordj Menaiel. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Boumerdes peaked in 1991-2005. The level of street-network sprawl in the aggregate network in Khemis El Khechna rose steadily. The level of street-network sprawl in the aggregate network in Bordj Menaiel was at its lowest in 1976-1990.