Mossel Bay in context: Street-network sprawl trends

Mossel Bay in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
Mossel BayWestern Cape (Region)South Africa (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Mossel Bay plotted against Western Cape and South Africa. The SNDi of new construction in Mossel Bay peaked in 1976-1990, compared to Western Cape which rose steadily and South Africa which rose steadily. Most recently, Mossel Bay's incremental SNDi fell from 4.97 to 4.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mossel Bay ranked 11th out of 14 cities in Western Cape and 69th out of 81 in South Africa as of 2020.

New Street Additions (2006–2020)

SNDi value
4.84
Rank in South Africa
60th of 81
Rank in Western Cape
10th of 14

Entire Network (Aggregate)

SNDi value
4.66
Rank in South Africa
69th of 81
Rank in Western Cape
11th 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
Mossel BayJardim Santa FeShangdang

While Jardim Santa Fé and Shangdang both fluctuated in its street-construction patterns, Mossel Bay built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. For the full network, Mossel Bay and Jardim Santa Fé both became progressively more disconnected, while Shangdang grew more disconnected from 1975 through 1976-1990, then improved. Mossel Bay and Jardim Santa Fé have been growing further apart in their street-network character since 1975.