Concord in context: Street-network sprawl trends

Concord in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
ConcordCalifornia (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Concord plotted against California and United States. While California and United States both peaked in 1991-2005, Concord's new street additions peaked in 1991-2005. Most recently, Concord's incremental SNDi fell from 6.38 to 4.98 between 1991-2005 and 2006-2020. In terms of the aggregate network, Concord ranked 48th out of 60 cities in California and 279th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.98
Rank in United States
252nd of 333
Rank in California
50th of 60

Entire Network (Aggregate)

SNDi value
4.35
Rank in United States
279th of 333
Rank in California
48th of 60

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
ConcordTimergaraConstanta

While Timergara and Constanța both built increasingly disconnected streets over time, Concord built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend. Notably, Concord had a more sprawly network than Timergara in 1975 but the two have since reversed their relative ranking.