Abiriba in context: Street-network sprawl trends

Abiriba in context

3.54.24.95.6<19751976–19901991–20052006–2020SNDi of street additions
3.54.24.95.6<19751976–19901991–20052006–2020SNDi of entire street network
AbiribaAbia (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Abiriba plotted against Abia and Nigeria. The SNDi of new construction in Abiriba peaked in 1991-2005, compared to Abia which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Abiriba's incremental SNDi fell from 5.59 to 5.42 between 1991-2005 and 2006-2020. In terms of the aggregate network, Abiriba ranked 7th out of 9 cities in Abia and 339th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
5.42
Rank in Nigeria
307th of 422
Rank in Abia
7th of 9

Entire Network (Aggregate)

SNDi value
4.43
Rank in Nigeria
339th of 422
Rank in Abia
7th of 9

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

What about similarly populated cities?

246810<19751976–19901991–20052006–2020SNDi of street additions
246810<19751976–19901991–20052006–2020SNDi of entire street network
AbiribaKafr IsmailMargate

In new street additions, Abiriba and Margate both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Kafr Ismail built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Abiriba and Margate have been growing further apart in their street-network character since 1975.