Ouahigouya in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ouahigouya plotted against Nord and Burkina Faso. The SNDi of new construction in Ouahigouya was at its lowest in 1976-1990, compared to Nord which followed a zig-zag trend with an overall increase and Burkina Faso which followed a zig-zag trend with an overall increase. Most recently, Ouahigouya's incremental SNDi rose from 1.17 to 1.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ouahigouya ranked 2nd out of 2 cities in Nord and 5th out of 19 in Burkina Faso as of 2020.

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

• Dirin, Egypt
• Chandpara, India
• Fazilka, India
• Alipur, Pakistan
• San Fernando, Philippines
• Dhar, India

In new street additions, Ouahigouya and Dirin both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Alipur built increasingly disconnected streets over time. For the full network, Ouahigouya became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Dirin became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Alipur became progressively more disconnected. Ouahigouya and Alipur have been growing further apart in their street-network character since 1975.