Sahel Silim in context: Street-network sprawl trends

Sahel Silim in context

3456<19751976–19901991–20052006–2020SNDi of street additions
3456<19751976–19901991–20052006–2020SNDi of entire street network
Sahel SilimAsyut (Region)Egypt (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sahel Silim plotted against Asyut and Egypt. The SNDi of new construction in Sahel Silim was at its lowest in 1976-1990, compared to Asyut which rose steadily and Egypt which followed a zig-zag trend with an overall increase. Most recently, Sahel Silim's incremental SNDi rose from 4.48 to 6.47 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sahel Silim ranked 13th out of 18 cities in Asyut and 164th out of 213 in Egypt as of 2020.

New Street Additions (2006–2020)

SNDi value
6.47
Rank in Egypt
178th of 213
Rank in Asyut
13th of 18

Entire Network (Aggregate)

SNDi value
4.54
Rank in Egypt
164th of 213
Rank in Asyut
13th of 18

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

What about similarly populated cities?

369<19751976–19901991–20052006–2020SNDi of street additions
369<19751976–19901991–20052006–2020SNDi of entire street network
Sahel SilimGummiBantwal Cross Road

In new street additions, Sahel Silim built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Gummi built increasingly disconnected streets from 1975 through 1991-2005, then improved and Bantwal Cross Road built increasingly disconnected streets over time. For the full network, Sahel Silim became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Gummi grew more disconnected from 1975 through 1991-2005, then improved and Bantwal Cross Road became progressively more disconnected. Sahel Silim and Bantwal Cross Road have been growing further apart in their street-network character since 1975.