Igbokoda in context: Street-network sprawl trends

Igbokoda in context

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
IgbokodaOndo (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Igbokoda plotted against Ondo and Nigeria. The SNDi of new construction in Igbokoda peaked in 1976-1990, compared to Ondo which followed a zig-zag trend with an overall increase and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Igbokoda's incremental SNDi fell from 7.79 to 6.33 between 1991-2005 and 2006-2020. In terms of the aggregate network, Igbokoda ranked 16th out of 17 cities in Ondo and 410th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
6.33
Rank in Nigeria
378th of 422
Rank in Ondo
15th of 17

Entire Network (Aggregate)

SNDi value
7.41
Rank in Nigeria
410th of 422
Rank in Ondo
16th of 17

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
IgbokodaDebrecenWuwei

In new street additions, Igbokoda and Wuwei both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Debrecen built increasingly disconnected streets over time. For the full network, Igbokoda and Wuwei both grew more disconnected from 1975 through 1976-1990, then improved, while Debrecen became progressively more disconnected.