Ibiza in context: Street-network sprawl trends

Ibiza 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
IbizaIslas Baleares (Region)Spain (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ibiza plotted against Islas Baleares and Spain. The SNDi of new construction in Ibiza followed a zig-zag trend with an overall increase, compared to Islas Baleares which followed a zig-zag trend with an overall increase and Spain which peaked in 1976-1990. Most recently, Ibiza's incremental SNDi rose from 2.02 to 2.77 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ibiza ranked 2nd out of 2 cities in Islas Baleares and 56th out of 85 in Spain as of 2020.

New Street Additions (2006–2020)

SNDi value
2.77
Rank in Spain
59th of 85
Rank in Islas Baleares
2nd of 2

Entire Network (Aggregate)

SNDi value
2.14
Rank in Spain
56th of 85
Rank in Islas Baleares
2nd of 2

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
IbizaAk-BulunCome

In new street additions, Ibiza fluctuated in its street-construction patterns, while Ak-Bulun built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Comè built increasingly disconnected streets over time. For the full network, Ibiza fluctuated in connectivity, while Ak-Bulun became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards and Comè became progressively more disconnected. Ibiza and Ak-Bulun have been converging in their street-network character since 1975.