Tessaoua in context: Street-network sprawl trends

Tessaoua in context

11.522.5<19751976–19901991–20052006–2020SNDi of street additions
11.522.5<19751976–19901991–20052006–2020SNDi of entire street network
TessaouaMaradi (Region)Niger (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tessaoua plotted against Maradi and Niger. The SNDi of new construction in Tessaoua followed a zig-zag trend with an overall increase, compared to Maradi which followed a zig-zag trend with an overall increase and Niger which rose steadily. Most recently, Tessaoua's incremental SNDi rose from 1.44 to 2.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tessaoua ranked 5th out of 7 cities in Maradi and 17th out of 33 in Niger as of 2020.

New Street Additions (2006–2020)

SNDi value
2.18
Rank in Niger
15th of 33
Rank in Maradi
4th of 7

Entire Network (Aggregate)

SNDi value
1.55
Rank in Niger
17th of 33
Rank in Maradi
5th of 7

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

What about similarly populated cities?

1.42.12.83.5<19751976–19901991–20052006–2020SNDi of street additions
1.42.12.83.5<19751976–19901991–20052006–2020SNDi of entire street network
TessaouaOldenburgFunan

While Oldenburg and Funan both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Tessaoua fluctuated in its street-construction patterns in new street additions. For the full network, Tessaoua and Oldenburg both became progressively more disconnected, while Funan grew more disconnected from 1975 through 1991-2005, then improved. Notably, Tessaoua had a more sprawly network than Funan in 1975 but the two have since reversed their relative ranking.