Iseyin in context: Street-network sprawl trends

Iseyin in context

33.64.2<19751976–19901991–20052006–2020SNDi of street additions
33.64.2<19751976–19901991–20052006–2020SNDi of entire street network
IseyinOyo (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iseyin plotted against Oyo and Nigeria. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Iseyin's incremental SNDi rose from 3.27 to 4.19 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iseyin ranked 14th out of 15 cities in Oyo and 257th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.19
Rank in Nigeria
206th of 422
Rank in Oyo
12th of 15

Entire Network (Aggregate)

SNDi value
3.55
Rank in Nigeria
257th of 422
Rank in Oyo
14th of 15

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

What about similarly populated cities?

2.43.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
IseyinMandi BahauddinBaicheng

In new street additions, Iseyin fluctuated in its street-construction patterns, while Mandi Bahauddin built increasingly disconnected streets over time and Baicheng built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Iseyin and Mandi Bahauddin have been growing further apart in their street-network character since 1975.