Songwe in context: Street-network sprawl trends

Songwe in context

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
SongweHaut-Lomami (Region)Democratic Republic of the Congo (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Songwe plotted against Haut-Lomami and Democratic Republic of the Congo. The SNDi of new construction in Songwe was at its lowest in 1976-1990, compared to Haut-Lomami which rose steadily and Democratic Republic of the Congo which followed a zig-zag trend with an overall increase. Most recently, Songwe's incremental SNDi rose from 0.89 to 3.66 between 1991-2005 and 2006-2020. In terms of the aggregate network, Songwe ranked 8th out of 17 cities in Haut-Lomami and 53rd out of 186 in Democratic Republic of the Congo as of 2020.

New Street Additions (2006–2020)

SNDi value
3.66
Rank in Democratic Republic of the Congo
73rd of 186
Rank in Haut-Lomami
9th of 17

Entire Network (Aggregate)

SNDi value
2.53
Rank in Democratic Republic of the Congo
53rd of 186
Rank in Haut-Lomami
8th of 17

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
SongweKibangoLoutu

In new street additions, Songwe and Kibango both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Loutu fluctuated in its street-construction patterns. Looking at the full network, Kibango and Loutu both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Songwe became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Songwe had a more connected network than Kibango in 1975 but the two have since reversed their relative ranking.