Oslo in context: Street-network sprawl trends

Oslo in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
OsloNorway (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Oslo plotted against Norway. Both Oslo and Norway follow the same trend. Most recently, Oslo's incremental SNDi rose from 3.24 to 3.43 between 1991-2005 and 2006-2020. In terms of the aggregate network, Oslo ranked 1st out of 8 in Norway as of 2020.

New Street Additions (2006–2020)

SNDi value
3.43
Rank in Norway
5th of 8

Entire Network (Aggregate)

SNDi value
2.47
Rank in Norway
1st of 8

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
OsloKarbalaVellore

In new street additions, Oslo and Vellore both built increasingly disconnected streets over time, while Karbala fluctuated in its street-construction patterns. For the full network, Oslo and Vellore both became progressively more disconnected, while Karbala fluctuated in connectivity. Oslo and Karbala have been converging in their street-network character since 1975.