Bregenz in context: Street-network sprawl trends

Bregenz 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
BregenzVorarlberg (Region)Austria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bregenz plotted against Vorarlberg and Austria. The SNDi of new construction in Bregenz peaked in 1991-2005, compared to Vorarlberg which peaked in 1991-2005 and Austria which rose steadily. Most recently, Bregenz's incremental SNDi fell from 2.89 to 2.39 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bregenz ranked 1st out of 1 cities in Vorarlberg and 6th out of 8 in Austria as of 2020.

New Street Additions (2006–2020)

SNDi value
2.39
Rank in Austria
3rd of 8
Rank in Vorarlberg
1st of 1

Entire Network (Aggregate)

SNDi value
2.2
Rank in Austria
6th of 8
Rank in Vorarlberg
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
BregenzPakariyaYatta

In new street additions, Bregenz built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pakariya fluctuated in its street-construction patterns and Yatta built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Bregenz became progressively more disconnected, while Pakariya became progressively more connected and Yatta became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Bregenz and Pakariya have been growing further apart in their street-network character since 1975.