Sacramento in context: Street-network sprawl trends

Sacramento in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
SacramentoCalifornia (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sacramento plotted against California and United States. The SNDi of new construction in Sacramento peaked in 1976-1990, compared to California which peaked in 1976-1990 and United States which peaked in 1991-2005. Most recently, Sacramento's incremental SNDi fell from 4.46 to 3.87 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sacramento ranked 37th out of 60 cities in California and 244th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
3.87
Rank in United States
128th of 333
Rank in California
19th of 60

Entire Network (Aggregate)

SNDi value
3.93
Rank in United States
244th of 333
Rank in California
37th of 60

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
SacramentoMeccaDaejeon

In new street additions, Sacramento and Mecca both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Daejeon fluctuated in its street-construction patterns. Looking at the full network, Mecca and Daejeon both became progressively more disconnected, while Sacramento grew more disconnected from 1975 through 1991-2005, then improved.