Gwarzo 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 Gwarzo plotted against Kano and Nigeria. The SNDi of new construction in Gwarzo peaked in 1991-2005, compared to Kano which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Gwarzo's incremental SNDi fell from 2.07 to 1.97 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gwarzo ranked 4th out of 14 cities in Kano and 43rd 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?

• Sikka, India
• Novocheboksarsk, Russia
• Sirinagar, India
• Sunam, India
• Senapati, India
• Ituiutaba, Brazil

While Sikka and Sunam both fluctuated in its street-construction patterns, Gwarzo built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend. Gwarzo and Sikka have been growing further apart in their street-network character since 1975.