Idanre in context: Street-network sprawl trends

Idanre in context

2.73.64.55.46.3<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.46.3<19751976–19901991–20052006–2020SNDi of entire street network
IdanreOndo (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Idanre plotted against Ondo and Nigeria. The SNDi of new construction in Idanre 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, Idanre's incremental SNDi fell from 5.16 to 4.85 between 1991-2005 and 2006-2020. In terms of the aggregate network, Idanre ranked 12th out of 17 cities in Ondo and 340th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.85
Rank in Nigeria
264th of 422
Rank in Ondo
7th of 17

Entire Network (Aggregate)

SNDi value
4.43
Rank in Nigeria
340th of 422
Rank in Ondo
12th of 17

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
IdanrePouso AlegreDiancheng

In new street additions, Idanre built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Pouso Alegre fluctuated in its street-construction patterns and Diancheng fluctuated in its street-construction patterns. For the full network, Idanre and Pouso Alegre both became progressively more disconnected, while Diancheng fluctuated in connectivity. Idanre and Pouso Alegre have been growing further apart in their street-network character since 1975.