Geneva in context: Street-network sprawl trends

Geneva in context

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
GenevaGeneve (Region)Switzerland (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Geneva plotted against Genève and Switzerland. The SNDi of new construction in Geneva peaked in 1976-1990, compared to Genève which peaked in 1991-2005 and Switzerland which rose steadily. Most recently, Geneva's incremental SNDi fell from 3.04 to 2.67 between 1991-2005 and 2006-2020. In terms of the aggregate network, Geneva ranked 1st out of 1 cities in Genève and 8th out of 17 in Switzerland as of 2020.

New Street Additions (2006–2020)

SNDi value
2.67
Rank in Switzerland
6th of 17
Rank in Genève
1st of 1

Entire Network (Aggregate)

SNDi value
2.0
Rank in Switzerland
8th of 17
Rank in Genève
1st of 1

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
GenevaPohang-siSan Cristobal

In new street additions, Geneva built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Pohang-si fluctuated in its street-construction patterns and San Cristobal built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend. Geneva and San Cristobal have been growing further apart in their street-network character since 1975.