Soubré in context: Street-network sprawl trends

Soubre in context

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
SoubreBas-Sassandra (Region)Cote d'Ivoire (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Soubré plotted against Bas-Sassandra and Côte d'Ivoire. The SNDi of new construction in Soubré rose steadily, compared to Bas-Sassandra which followed a zig-zag trend with an overall increase and Côte d'Ivoire which followed a zig-zag trend with an overall increase. Most recently, Soubré's incremental SNDi rose from 3.06 to 4.51 between 1991-2005 and 2006-2020. In terms of the aggregate network, Soubré ranked 2nd out of 4 cities in Bas-Sassandra and 32nd out of 39 in Côte d'Ivoire as of 2020.

New Street Additions (2006–2020)

SNDi value
4.51
Rank in Côte d'Ivoire
29th of 39
Rank in Bas-Sassandra
2nd of 4

Entire Network (Aggregate)

SNDi value
3.24
Rank in Côte d'Ivoire
32nd of 39
Rank in Bas-Sassandra
2nd of 4

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

What about similarly populated cities?

1.62.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
SoubreChangtingJinhu County

In new street additions, Soubré built increasingly disconnected streets over time, while Changting built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Jinhu County built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Soubré and Jinhu County both became progressively more disconnected, while Changting became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Soubré had a more connected network than Changting in 1975 but the two have since reversed their relative ranking.