Bouza in context: Street-network sprawl trends

Bouza in context

1.522.53<19751976–19901991–20052006–2020SNDi of street additions
1.522.53<19751976–19901991–20052006–2020SNDi of entire street network
BouzaTahoua (Region)Niger (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bouza plotted against Tahoua and Niger. The SNDi of new construction in Bouza was at its lowest in 1991-2005, compared to Tahoua which rose steadily and Niger which rose steadily. Most recently, Bouza's incremental SNDi rose from 1.28 to 3.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bouza ranked 3rd out of 8 cities in Tahoua and 18th out of 33 in Niger as of 2020.

New Street Additions (2006–2020)

SNDi value
3.0
Rank in Niger
21st of 33
Rank in Tahoua
4th of 8

Entire Network (Aggregate)

SNDi value
1.69
Rank in Niger
18th of 33
Rank in Tahoua
3rd of 8

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
BouzaNansioKurganinsk

In new street additions, Bouza built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns, while Nansio built increasingly disconnected streets from 1975 through 1991-2005, then improved and Kurganinsk built increasingly disconnected streets over time. Looking at the full network, Nansio and Kurganinsk both became progressively more disconnected, while Bouza became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Bouza and Nansio have been growing further apart in their street-network character since 1975.