Isale in context: Street-network sprawl trends

Isale 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
IsaleOgun (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Isale plotted against Ogun and Nigeria. The SNDi of new construction in Isale rose steadily, compared to Ogun which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Isale's incremental SNDi rose from 3.13 to 3.99 between 1991-2005 and 2006-2020. In terms of the aggregate network, Isale ranked 12th out of 16 cities in Ogun and 289th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
3.99
Rank in Nigeria
190th of 422
Rank in Ogun
4th of 16

Entire Network (Aggregate)

SNDi value
3.78
Rank in Nigeria
289th of 422
Rank in Ogun
12th of 16

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

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
IsaleLambakDongshan

In new street additions, Isale built increasingly disconnected streets over time, while Lambak built increasingly disconnected streets from 1975 through 1991-2005, then improved and Dongshan built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Isale became progressively more disconnected, while Lambak grew more disconnected from 1975 through 1991-2005, then improved and Dongshan became progressively more connected. Isale and Dongshan have been converging in their street-network character since 1975.