Charlotte in context: Street-network sprawl trends

Charlotte in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Charlotte plotted against North Carolina and United States. The SNDi of new construction in Charlotte peaked in 1976-1990, compared to North Carolina which peaked in 1991-2005 and United States which peaked in 1991-2005. Most recently, Charlotte's incremental SNDi fell from 4.96 to 4.36 between 1991-2005 and 2006-2020. In terms of the aggregate network, Charlotte ranked 4th out of 7 cities in North Carolina and 249th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.36
Rank in United States
196th of 333
Rank in North Carolina
3rd of 7

Entire Network (Aggregate)

SNDi value
3.98
Rank in United States
249th of 333
Rank in North Carolina
4th of 7

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
CharlottePaarlConghua

In new street additions, Charlotte built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Paarl built increasingly disconnected streets from 1975 through 1991-2005, then improved and Conghua built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Notably, Charlotte had a more connected network than Paarl in 1975 but the two have since reversed their relative ranking.