Hamburg in context: Street-network sprawl trends

Hamburg in context

1.82.43<19751976–19901991–20052006–2020SNDi of street additions
1.82.43<19751976–19901991–20052006–2020SNDi of entire street network
HamburgGermany (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Hamburg plotted against Germany. The SNDi of new construction in Hamburg peaked in 1991-2005, while Germany rose steadily. Most recently, Hamburg's incremental SNDi fell from 2.38 to 2.37 between 1991-2005 and 2006-2020. In terms of the aggregate network, Hamburg ranked 16th out of 99 in Germany as of 2020.

New Street Additions (2006–2020)

SNDi value
2.37
Rank in Germany
26th of 99

Entire Network (Aggregate)

SNDi value
1.72
Rank in Germany
16th of 99

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
HamburgBasraZibo

In new street additions, Hamburg built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Basra built increasingly disconnected streets over time and Zibo built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Hamburg and Basra both became progressively more disconnected, while Zibo grew more disconnected from 1975 through 1976-1990, then improved. Hamburg and Basra have been growing further apart in their street-network character since 1975.