Soshanguve in context: Street-network sprawl trends

Soshanguve 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
SoshanguveGauteng (Region)South Africa (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Soshanguve plotted against Gauteng and South Africa. The SNDi of new construction in Soshanguve peaked in 1991-2005, compared to Gauteng which peaked in 1991-2005 and South Africa which rose steadily. Most recently, Soshanguve's incremental SNDi fell from 3.37 to 3.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Soshanguve ranked 6th out of 14 cities in Gauteng and 35th out of 81 in South Africa as of 2020.

New Street Additions (2006–2020)

SNDi value
3.34
Rank in South Africa
29th of 81
Rank in Gauteng
4th of 14

Entire Network (Aggregate)

SNDi value
3.04
Rank in South Africa
35th of 81
Rank in Gauteng
6th of 14

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
SoshanguveNiameyKhulna

In new street additions, Soshanguve built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Niamey fluctuated in its street-construction patterns and Khulna built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Soshanguve and Khulna have been growing further apart in their street-network character since 1975.