Salina Cruz in context: Street-network sprawl trends

Salina Cruz in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
Salina CruzOaxaca (Region)Mexico (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Salina Cruz plotted against Oaxaca and México. The SNDi of new construction in Salina Cruz rose steadily, compared to Oaxaca which rose steadily and México which followed a zig-zag trend with an overall increase. Most recently, Salina Cruz's incremental SNDi rose from 3.08 to 3.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Salina Cruz ranked 2nd out of 6 cities in Oaxaca and 104th out of 182 in México as of 2020.

New Street Additions (2006–2020)

SNDi value
3.34
Rank in México
80th of 182
Rank in Oaxaca
3rd of 6

Entire Network (Aggregate)

SNDi value
2.82
Rank in México
104th of 182
Rank in Oaxaca
2nd of 6

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
Salina CruzBuulo MareerHuayuan

In new street additions, Salina Cruz built increasingly disconnected streets over time, while Buulo Mareer fluctuated in its street-construction patterns and Huayuan built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Salina Cruz became progressively more disconnected, while Buulo Mareer became progressively more disconnected and Huayuan grew more disconnected from 1975 through 1991-2005, then improved.