Groningen in context: Street-network sprawl trends

Groningen in context

1.622.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
GroningenNetherlands (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Groningen plotted against Netherlands. The SNDi of new construction in Groningen rose steadily, while Netherlands peaked in 1991-2005. Most recently, Groningen's incremental SNDi rose from 2.63 to 3.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Groningen ranked 22nd out of 43 in Netherlands as of 2020.

New Street Additions (2006–2020)

SNDi value
3.06
Rank in Netherlands
36th of 43

Entire Network (Aggregate)

SNDi value
1.88
Rank in Netherlands
22nd of 43

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
GroningenGuluDayi

Groningen, Gulu, and Dayi all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Notably, Groningen had a more sprawly network than Dayi in 1975 but the two have since reversed their relative ranking.