Porterville in context: Street-network sprawl trends

Porterville 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
PortervilleCalifornia (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Porterville plotted against California and United States. The SNDi of new construction in Porterville rose steadily, compared to California which peaked in 1976-1990 and United States which peaked in 1991-2005. Most recently, Porterville's incremental SNDi rose from 3.84 to 4.28 between 1991-2005 and 2006-2020. In terms of the aggregate network, Porterville ranked 13th out of 60 cities in California and 157th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.28
Rank in United States
185th of 333
Rank in California
37th of 60

Entire Network (Aggregate)

SNDi value
3.12
Rank in United States
157th of 333
Rank in California
13th of 60

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
PortervilleQue VoMaychew

In new street additions, Porterville built increasingly disconnected streets over time, while Quế Võ fluctuated in its street-construction patterns and Maychew fluctuated in its street-construction patterns. For the full network, Porterville and Maychew both became progressively more disconnected, while Quế Võ fluctuated in connectivity. Notably, Porterville had a more connected network than Quế Võ in 1975 but the two have since reversed their relative ranking.