Bétou in context: Street-network sprawl trends

Betou in context

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
BetouLikouala (Region)Republic of the Congo (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Bétou plotted against Likouala and Republic of the Congo. The SNDi of new construction in Bétou followed a zig-zag trend with an overall increase, compared to Likouala which followed a zig-zag trend with an overall increase and Republic of the Congo which peaked in 1976-1990. Most recently, Bétou's incremental SNDi fell from 1.75 to 1.65 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bétou ranked 1st out of 3 cities in Likouala and 1st out of 6 in Republic of the Congo as of 2020.

New Street Additions (2006–2020)

SNDi value
1.65
Rank in Republic of the Congo
1st of 6
Rank in Likouala
1st of 3

Entire Network (Aggregate)

SNDi value
1.63
Rank in Republic of the Congo
1st of 6
Rank in Likouala
1st of 3

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
BetouUdumaOuled-Teima

In new street additions, Bétou fluctuated in its street-construction patterns, while Uduma built increasingly disconnected streets over time and Ouled-Teima fluctuated in its street-construction patterns. For the full network, Bétou became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Uduma became progressively more disconnected and Ouled-Teima fluctuated in connectivity. Bétou and Uduma have been growing further apart in their street-network character since 1975.