Spring Valley in context: Street-network sprawl trends

Spring Valley in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
Spring ValleyNew York (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Spring Valley plotted against New York and United States. While New York and United States both peaked in 1991-2005, Spring Valley's new street additions peaked in 1991-2005. Most recently, Spring Valley's incremental SNDi fell from 4.73 to 4.44 between 1991-2005 and 2006-2020. In terms of the aggregate network, Spring Valley ranked 12th out of 12 cities in New York and 265th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.44
Rank in United States
207th of 333
Rank in New York
8th of 12

Entire Network (Aggregate)

SNDi value
4.17
Rank in United States
265th of 333
Rank in New York
12th of 12

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
Spring ValleyHelongMoanda

In new street additions, Spring Valley and Moanda both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Helong built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Spring Valley and Moanda both became progressively more disconnected, while Helong grew more disconnected from 1975 through 1991-2005, then improved. Spring Valley and Moanda have been converging in their street-network character since 1975.