Carmel Commons in context: Street-network sprawl trends

Carmel Commons in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Carmel Commons plotted against North Carolina and United States. The SNDi of new construction in Carmel Commons peaked in 1976-1990, compared to North Carolina which peaked in 1991-2005 and United States which peaked in 1991-2005. Most recently, Carmel Commons's incremental SNDi fell from 6.35 to 5.82 between 1991-2005 and 2006-2020. In terms of the aggregate network, Carmel Commons ranked 7th out of 7 cities in North Carolina and 319th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
5.82
Rank in United States
295th of 333
Rank in North Carolina
7th of 7

Entire Network (Aggregate)

SNDi value
5.84
Rank in United States
319th of 333
Rank in North Carolina
7th of 7

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

What about similarly populated cities?

036912<19751976–19901991–20052006–2020SNDi of street additions
036912<19751976–19901991–20052006–2020SNDi of entire street network
Carmel CommonsBanaliaGore

In new street additions, Carmel Commons built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Banalia fluctuated in its street-construction patterns and Goré built increasingly disconnected streets over time. For the full network, Carmel Commons and Goré both became progressively more disconnected, while Banalia grew more disconnected from 1975 through 1976-1990, then improved. Notably, Carmel Commons had a more sprawly network than Banalia in 1975 but the two have since reversed their relative ranking.