Houndé 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 Houndé plotted against Haut-Bassins and Burkina Faso. The SNDi of new construction in Houndé was at its lowest in 1991-2005, compared to Haut-Bassins 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, Houndé's incremental SNDi rose from 1.68 to 2.21 between 1991-2005 and 2006-2020. In terms of the aggregate network, Houndé ranked 2nd out of 2 cities in Haut-Bassins and 12th 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?

• Quibala, Angola
• Karangampel, Indonesia
• Wudi, China
• Joetsu, Japan
• Melilla, Spain
• Birampur, Bangladesh

In new street additions, Houndé built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Quibala built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Joetsu built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Houndé became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Quibala became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Joetsu grew more disconnected from 1975 through 1976-1990, then improved. Notably, Houndé had a more sprawly network than Quibala in 1975 but the two have since reversed their relative ranking.