Vienna in context: Street-network sprawl trends

Vienna in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
ViennaWien (Region)Austria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Vienna plotted against Wien and Austria. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Vienna's incremental SNDi rose from 2.12 to 2.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Vienna ranked 1st out of 1 cities in Wien and 1st out of 8 in Austria as of 2020.

New Street Additions (2006–2020)

SNDi value
2.34
Rank in Austria
2nd of 8
Rank in Wien
1st of 1

Entire Network (Aggregate)

SNDi value
1.33
Rank in Austria
1st of 8
Rank in Wien
1st of 1

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
ViennaAlmatyWarsaw

Vienna, Almaty, and Warsaw all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Vienna and Almaty have been growing further apart in their street-network character since 1975.