The level of street-network sprawl in new development in Wallonie rose steadily. To get a sense of how street development has changed in Wallonie, we can consider three of its most populous cities: Liège, Charleroi and La Louvière. Out of the three cities, Liège and Charleroi do not follow the same trend as the region. The level of street-network sprawl in new development in Liège peaked in 1991-2005. The level of street-network sprawl in new development in Charleroi peaked in 1991-2005.

How do development practices in Wallonie fare in comparison to others in Belgium? Most recently in 2006-2020, street construction in Wallonie was the 2nd-most disconnected out of the 3 regions in Belgium. Its position in the ranks since 1975 has risen; relative to other regions in Belgium, street construction in Wallonie has become more disconnected. Wallonie ranked 3rd in 1975, 3rd in 1976-1990, 2nd in 1991-2005 and 2nd in 2006-2020.

As of 2020, the city with the most disconnected street network in Wallonie is Namur with an SNDi of 2.44, which is relatively well-connected. Conversely, the most connected city is Frameries with an SNDi of 2.16, which is well-connected. See trends for these cities: Frameries, Namur

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

To date, Wallonie is the 3rd-most disconnected out of the 3 regions in Belgium. Its position in the ranks since 1975 has not changed. Wallonie ranked 3rd in 1975, 3rd in 1976-1990, 3rd in 1991-2005 and 3rd in 2006-2020.