Bonn in context: Street-network sprawl trends

Bonn in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
BonnNordrhein-Westfalen (Region)Germany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bonn plotted against Nordrhein-Westfalen and Germany. The SNDi of new construction in Bonn followed a zig-zag trend with an overall increase, compared to Nordrhein-Westfalen which rose steadily and Germany which rose steadily. Most recently, Bonn's incremental SNDi rose from 3.69 to 3.97 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bonn ranked 24th out of 24 cities in Nordrhein-Westfalen and 95th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
3.97
Rank in Germany
90th of 99
Rank in Nordrhein-Westfalen
21st of 24

Entire Network (Aggregate)

SNDi value
3.41
Rank in Germany
95th of 99
Rank in Nordrhein-Westfalen
24th of 24

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
BonnZaporizhzhiaJepara

While Zaporizhzhia and Jepara both built increasingly disconnected streets over time, Bonn fluctuated in its street-construction patterns in new street additions. For the full street network, though, all three cities follow the same trend. Bonn and Jepara have been growing further apart in their street-network character since 1975.