Marseille in context: Street-network sprawl trends
Marseille in context
The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Marseille plotted against Provence-Alpes-Côte d'Azur and France. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Marseille's incremental SNDi fell from 6.5 to 5.83 between 1991-2005 and 2006-2020. In terms of the aggregate network, Marseille ranked 2nd out of 7 cities in Provence-Alpes-Côte d'Azur and 67th out of 73 in France as of 2020.
New Street Additions (2006–2020)
- SNDi value
- 5.83
- Rank in France
- 67th of 73
- Rank in Provence-Alpes-Côte d'Azur
- 3rd of 7
Entire Network (Aggregate)
- SNDi value
- 3.44
- Rank in France
- 67th of 73
- Rank in Provence-Alpes-Côte d'Azur
- 2nd of 7
Rankings go from most connected to most disconnected — rank 1 is the most connected.
What about similarly populated cities?
In new street additions, Bujumbura and Katowice both built increasingly disconnected streets over time, while Marseille built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend.