Evaton in context: Street-network sprawl trends

Evaton in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
EvatonGauteng (Region)South Africa (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Evaton plotted against Gauteng and South Africa. While Gauteng and South Africa both rose steadily, Evaton's new street additions rose steadily. Most recently, Evaton's incremental SNDi rose from 3.43 to 3.94 between 1991-2005 and 2006-2020. In terms of the aggregate network, Evaton ranked 7th out of 14 cities in Gauteng and 45th out of 81 in South Africa as of 2020.

New Street Additions (2006–2020)

SNDi value
3.94
Rank in South Africa
48th of 81
Rank in Gauteng
8th of 14

Entire Network (Aggregate)

SNDi value
3.37
Rank in South Africa
45th of 81
Rank in Gauteng
7th of 14

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

What about similarly populated cities?

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
EvatonTampaLonggang

In new street additions, Evaton and Tampa both built increasingly disconnected streets over time, while Longgang fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. Notably, Evaton had a more sprawly network than Longgang in 1975 but the two have since reversed their relative ranking.