Vitoria-Gasteiz in context: Street-network sprawl trends

Vitoria-Gasteiz in context

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
Vitoria-GasteizPais Vasco (Region)Spain (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Vitoria-Gasteiz plotted against País Vasco and Spain. The SNDi of new construction in Vitoria-Gasteiz peaked in 1991-2005, compared to País Vasco which peaked in 1976-1990 and Spain which peaked in 1976-1990. Most recently, Vitoria-Gasteiz's incremental SNDi fell from 1.65 to 1.54 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vitoria-Gasteiz ranked 1st out of 3 cities in País Vasco and 9th out of 85 in Spain as of 2020.

New Street Additions (2006–2020)

SNDi value
1.54
Rank in Spain
9th of 85
Rank in País Vasco
1st of 3

Entire Network (Aggregate)

SNDi value
1.39
Rank in Spain
9th of 85
Rank in País Vasco
1st of 3

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
Vitoria-GasteizBonsa BotaBohicon

In new street additions, Vitoria-Gasteiz built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Bonsa Bota built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Bohicon built increasingly disconnected streets over time. For the full network, Vitoria-Gasteiz and Bohicon both became progressively more disconnected, while Bonsa Bota became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Vitoria-Gasteiz and Bonsa Bota have been growing further apart in their street-network character since 1975.