The level of street-network sprawl in new development in Likouala followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Likouala, we can consider three of its most populous cities: Impfondo, Bétou and Dongou. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Impfondo peaked in 1991-2005. The level of street-network sprawl in new development in Bétou followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Dongou peaked in 1976-1990.

As of 2020, the city with the most disconnected street network in Likouala is Dongou with an SNDi of 2.87, which is moderately connected. Conversely, the most connected city is Bétou with an SNDi of 1.63, which is very well-connected. See trends for these cities: Bétou, Dongou

The level of street-network sprawl in the aggregate network in Likouala peaked in 1976-1990. To get a sense of how the aggregate street network has changed in Likouala, we can consider three of its most populous cities: Impfondo, Bétou and Dongou. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Impfondo rose steadily. The level of street-network sprawl in the aggregate network in Bétou was at its lowest in 1976-1990. The level of street-network sprawl in the aggregate network in Dongou followed a zig-zag trend with an overall increase.