Yei in context: Street-network sprawl trends

Yei in context

1.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
1.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
YeiCentral Equatoria (Region)South Sudan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Yei plotted against Central Equatoria and South Sudan. The SNDi of new construction in Yei rose steadily, compared to Central Equatoria which was at its lowest in 1976-1990 and South Sudan which followed a zig-zag trend with an overall increase. Most recently, Yei's incremental SNDi rose from 2.89 to 5.0 between 1991-2005 and 2006-2020. In terms of the aggregate network, Yei ranked 2nd out of 2 cities in Central Equatoria and 13th out of 16 in South Sudan as of 2020.

New Street Additions (2006–2020)

SNDi value
5.0
Rank in South Sudan
15th of 16
Rank in Central Equatoria
2nd of 2

Entire Network (Aggregate)

SNDi value
4.03
Rank in South Sudan
13th of 16
Rank in Central Equatoria
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
YeiNadorMakiivka

In new street additions, Yei built increasingly disconnected streets over time, while Nador fluctuated in its street-construction patterns and Makiivka built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Notably, Yei had a more connected network than Makiivka in 1975 but the two have since reversed their relative ranking.