Tivaouane in context: Street-network sprawl trends

Tivaouane in context

1.21.62<19751976–19901991–20052006–2020SNDi of street additions
1.21.62<19751976–19901991–20052006–2020SNDi of entire street network
TivaouaneThies (Region)Senegal (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tivaouane plotted against Thiès and Senegal. The SNDi of new construction in Tivaouane rose steadily, compared to Thiès which followed a zig-zag trend with an overall increase and Senegal which followed a zig-zag trend with an overall increase. Most recently, Tivaouane's incremental SNDi rose from 1.28 to 1.44 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tivaouane ranked 1st out of 4 cities in Thiès and 11th out of 25 in Senegal as of 2020.

New Street Additions (2006–2020)

SNDi value
1.44
Rank in Senegal
8th of 25
Rank in Thiès
2nd of 4

Entire Network (Aggregate)

SNDi value
1.29
Rank in Senegal
11th of 25
Rank in Thiès
1st of 4

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
TivaouaneCartagoBaturaja

While Cartago and Baturaja both fluctuated in its street-construction patterns, Tivaouane built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Tivaouane and Cartago have been growing further apart in their street-network character since 1975.