Iwoye in context: Street-network sprawl trends

Iwoye in context

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
IwoyeOsun (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iwoye plotted against Osun and Nigeria. The SNDi of new construction in Iwoye rose steadily, compared to Osun which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Iwoye's incremental SNDi rose from 4.09 to 5.23 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iwoye ranked 4th out of 19 cities in Osun and 216th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
5.23
Rank in Nigeria
290th of 422
Rank in Osun
10th of 19

Entire Network (Aggregate)

SNDi value
3.26
Rank in Nigeria
216th of 422
Rank in Osun
4th of 19

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
IwoyeMilianaSafdarabad

While Miliana and Safdarabad both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Iwoye built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Iwoye and Safdarabad have been converging in their street-network character since 1975.