Iwo in context: Street-network sprawl trends

Iwo in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
IwoOsun (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iwo plotted against Osun and Nigeria. The SNDi of new construction in Iwo rose steadily, compared to Osun which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Iwo's incremental SNDi rose from 3.72 to 4.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iwo ranked 9th out of 19 cities in Osun and 290th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.57
Rank in Nigeria
239th of 422
Rank in Osun
4th of 19

Entire Network (Aggregate)

SNDi value
3.78
Rank in Nigeria
290th of 422
Rank in Osun
9th of 19

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
IwoHammametEn Nahud

While Hammamet and En Nahud both fluctuated in its street-construction patterns, Iwo built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Iwo and Hammamet have been growing further apart in their street-network character since 1975.