Blouberg Rise in context: Street-network sprawl trends

Blouberg Rise 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
Blouberg RiseWestern Cape (Region)South Africa (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Blouberg Rise plotted against Western Cape and South Africa. The SNDi of new construction in Blouberg Rise peaked in 1991-2005, compared to Western Cape which rose steadily and South Africa which rose steadily. Most recently, Blouberg Rise's incremental SNDi fell from 4.93 to 4.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Blouberg Rise ranked 10th out of 14 cities in Western Cape and 64th out of 81 in South Africa as of 2020.

New Street Additions (2006–2020)

SNDi value
4.06
Rank in South Africa
50th of 81
Rank in Western Cape
7th of 14

Entire Network (Aggregate)

SNDi value
4.24
Rank in South Africa
64th of 81
Rank in Western Cape
10th of 14

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

What about similarly populated cities?

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
Blouberg RiseBapatlaIganga

While Bapatla and Iganga both fluctuated in its street-construction patterns, Blouberg Rise built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full network, Blouberg Rise grew more disconnected from 1975 through 1991-2005, then improved, while Bapatla fluctuated in connectivity and Iganga became progressively more disconnected. Notably, Blouberg Rise had a more connected network than Bapatla in 1975 but the two have since reversed their relative ranking.