Castelldefels in context: Street-network sprawl trends

Castelldefels in context

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
CastelldefelsCataluna (Region)Spain (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Castelldefels plotted against Cataluña and Spain. The SNDi of new construction in Castelldefels followed a zig-zag trend with an overall increase, compared to Cataluña which rose steadily and Spain which peaked in 1976-1990. Most recently, Castelldefels's incremental SNDi rose from 2.14 to 3.14 between 1991-2005 and 2006-2020. In terms of the aggregate network, Castelldefels ranked 12th out of 15 cities in Cataluña and 47th out of 85 in Spain as of 2020.

New Street Additions (2006–2020)

SNDi value
3.14
Rank in Spain
66th of 85
Rank in Cataluña
11th of 15

Entire Network (Aggregate)

SNDi value
1.97
Rank in Spain
47th of 85
Rank in Cataluña
12th of 15

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
CastelldefelsCalbayogKosamba

In new street additions, Castelldefels and Kosamba both fluctuated in its street-construction patterns, while Calbayog built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Castelldefels and Calbayog both became progressively more disconnected, while Kosamba fluctuated in connectivity. Castelldefels and Calbayog have been growing further apart in their street-network character since 1975.