South Valley in context: Street-network sprawl trends

South Valley 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
South ValleyNew Mexico (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with South Valley plotted against New Mexico and United States. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, South Valley's incremental SNDi fell from 4.04 to 3.88 between 1991-2005 and 2006-2020. In terms of the aggregate network, South Valley ranked 3rd out of 4 cities in New Mexico and 243rd out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
3.88
Rank in United States
131st of 333
Rank in New Mexico
1st of 4

Entire Network (Aggregate)

SNDi value
3.93
Rank in United States
243rd of 333
Rank in New Mexico
3rd of 4

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

What about similarly populated cities?

1.82.73.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.6<19751976–19901991–20052006–2020SNDi of entire street network
South ValleyMahajangaKremenchuk

In new street additions, South Valley built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Mahajanga fluctuated in its street-construction patterns and Kremenchuk built increasingly disconnected streets over time. Looking at the full network, Mahajanga and Kremenchuk both became progressively more disconnected, while South Valley grew more disconnected from 1975 through 1991-2005, then improved.