Kwale in context: Street-network sprawl trends

Kwale in context

3.544.55<19751976–19901991–20052006–2020SNDi of street additions
3.544.55<19751976–19901991–20052006–2020SNDi of entire street network
KwaleDelta (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kwale plotted against Delta and Nigeria. The SNDi of new construction in Kwale peaked in 1991-2005, compared to Delta which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Kwale's incremental SNDi fell from 4.43 to 4.13 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kwale ranked 11th out of 20 cities in Delta and 295th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.13
Rank in Nigeria
202nd of 422
Rank in Delta
7th of 20

Entire Network (Aggregate)

SNDi value
3.88
Rank in Nigeria
295th of 422
Rank in Delta
11th of 20

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

What about similarly populated cities?

345<19751976–19901991–20052006–2020SNDi of street additions
345<19751976–19901991–20052006–2020SNDi of entire street network
KwaleEl TocuyoHastings

In new street additions, Kwale and Hastings both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while El Tocuyo built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Kwale and El Tocuyo have been converging in their street-network character since 1975.