Wurno 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 Wurno plotted against Sokoto and Nigeria. The SNDi of new construction in Wurno rose steadily, compared to Sokoto which peaked in 1976-1990 and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Wurno's incremental SNDi rose from 3.71 to 4.25 between 1991-2005 and 2006-2020. In terms of the aggregate network, Wurno ranked 5th out of 6 cities in Sokoto and 242nd out of 422 in Nigeria as of 2020.

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

What about similarly populated cities?

• Perus, Brazil
• Jilong, China
• Dongkou, China
• Map Ta Phut, Thailand
• Piro, India
• Hanumangarh, India

In new street additions, Wurno and Map Ta Phut both built increasingly disconnected streets over time, while Perus fluctuated in its street-construction patterns. Looking at the full network, Perus and Map Ta Phut both became progressively more disconnected, while Wurno became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Wurno had a more sprawly network than Map Ta Phut in 1975 but the two have since reversed their relative ranking.