Nikki in context: Street-network sprawl trends

Nikki in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
NikkiBorgou (Region)Benin (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Nikki plotted against Borgou and Benin. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Nikki's incremental SNDi rose from 2.56 to 4.18 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nikki ranked 2nd out of 2 cities in Borgou and 23rd out of 24 in Benin as of 2020.

New Street Additions (2006–2020)

SNDi value
4.18
Rank in Benin
23rd of 24
Rank in Borgou
2nd of 2

Entire Network (Aggregate)

SNDi value
3.07
Rank in Benin
23rd of 24
Rank in Borgou
2nd of 2

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
NikkiFormigaSault Ste. Marie

In new street additions, Nikki fluctuated in its street-construction patterns, while Formiga built increasingly disconnected streets over time and Sault Ste. Marie built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full street network, though, all three cities follow the same trend. Notably, Nikki had a more connected network than Formiga in 1975 but the two have since reversed their relative ranking.