El Affroun in context: Street-network sprawl trends

El Affroun in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
El AffrounBlida (Region)Algeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with El Affroun plotted against Blida and Algeria. The SNDi of new construction in El Affroun peaked in 1991-2005, compared to Blida which peaked in 1991-2005 and Algeria which followed a zig-zag trend with an overall decrease. Most recently, El Affroun's incremental SNDi fell from 5.37 to 4.19 between 1991-2005 and 2006-2020. In terms of the aggregate network, El Affroun ranked 2nd out of 4 cities in Blida and 94th out of 109 in Algeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.19
Rank in Algeria
88th of 109
Rank in Blida
1st of 4

Entire Network (Aggregate)

SNDi value
4.16
Rank in Algeria
94th of 109
Rank in Blida
2nd of 4

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
El AffrounBaragashiHamriya Free Zone

In new street additions, El Affroun and Hamriya Free Zone both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Baragashi fluctuated in its street-construction patterns. For the full network, El Affroun and Hamriya Free Zone both became progressively more disconnected, while Baragashi fluctuated in connectivity. El Affroun and Hamriya Free Zone have been converging in their street-network character since 1975.