Ash Shallal in context: Street-network sprawl trends

Ash Shallal in context

1.51.82.12.4<19751976–19901991–20052006–2020SNDi of street additions
1.51.82.12.4<19751976–19901991–20052006–2020SNDi of entire street network
Ash ShallalBlue Nile (Region)Sudan (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Ash Shallal plotted against Blue Nile and Sudan. While Blue Nile and Sudan both followed a zig-zag trend with an overall increase, Ash Shallal's new street additions followed a zig-zag trend with an overall increase. Most recently, Ash Shallal's incremental SNDi rose from 1.57 to 1.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ash Shallal ranked 2nd out of 3 cities in Blue Nile and 48th out of 78 in Sudan as of 2020.

New Street Additions (2006–2020)

SNDi value
1.86
Rank in Sudan
42nd of 78
Rank in Blue Nile
3rd of 3

Entire Network (Aggregate)

SNDi value
1.71
Rank in Sudan
48th of 78
Rank in Blue Nile
2nd of 3

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

What about similarly populated cities?

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
Ash ShallalAsh ShuaraSalka

In new street additions, Ash Shallal and Ash Shuara both fluctuated in its street-construction patterns, while Salka built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns. For the full network, Ash Shallal and Ash Shuara both became progressively more disconnected, while Salka became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Ash Shallal and Salka have been converging in their street-network character since 1975.