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?
While Bujumbura and Katowice both built increasingly disconnected streets over time, Marseille built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. For the full street network, though, all three cities follow the same trend.