Birnin Kudu 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 Birnin Kudu plotted against Jigawa and Nigeria. The SNDi of new construction in Birnin Kudu peaked in 1991-2005, compared to Jigawa which peaked in 1976-1990 and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Birnin Kudu's incremental SNDi fell from 2.25 to 1.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, Birnin Kudu ranked 5th out of 11 cities in Jigawa and 46th 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?

• Abnud, Egypt
• Feroze Wattwan, Pakistan
• Qianwei, China
• Chakdaha, India
• Oleksandriia, Ukraine
• Kundla, India

In new street additions, Birnin Kudu built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Abnud built increasingly disconnected streets over time and Chakdaha built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Birnin Kudu and Abnud both became progressively more disconnected, while Chakdaha became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Birnin Kudu and Chakdaha have been converging in their street-network character since 1975.