Bujumbura in context: Street-network sprawl trends

Bujumbura in context

2.42.83.23.6<19751976–19901991–20052006–2020SNDi of street additions
2.42.83.23.6<19751976–19901991–20052006–2020SNDi of entire street network
BujumburaBujumbura Mairie (Region)Burundi (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bujumbura plotted against Bujumbura Mairie and Burundi. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Bujumbura's incremental SNDi rose from 3.33 to 3.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bujumbura ranked 1st out of 1 cities in Bujumbura Mairie and 6th out of 10 in Burundi as of 2020.

New Street Additions (2006–2020)

SNDi value
3.46
Rank in Burundi
5th of 10
Rank in Bujumbura Mairie
1st of 1

Entire Network (Aggregate)

SNDi value
2.88
Rank in Burundi
6th of 10
Rank in Bujumbura Mairie
1st of 1

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
BujumburaAbujaMarseille

In new street additions, Bujumbura and Abuja 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.