Asmara in context: Street-network sprawl trends

Asmara in context

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
AsmaraMaekel (Region)Eritrea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Asmara plotted against Maekel and Eritrea. The SNDi of new construction in Asmara peaked in 1991-2005, compared to Maekel which rose steadily and Eritrea which followed a zig-zag trend with an overall increase. Most recently, Asmara's incremental SNDi fell from 2.08 to 1.76 between 1991-2005 and 2006-2020. In terms of the aggregate network, Asmara ranked 1st out of 1 cities in Maekel and 4th out of 8 in Eritrea as of 2020.

New Street Additions (2006–2020)

SNDi value
1.76
Rank in Eritrea
3rd of 8
Rank in Maekel
1st of 1

Entire Network (Aggregate)

SNDi value
1.68
Rank in Eritrea
4th of 8
Rank in Maekel
1st of 1

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
AsmaraGranadaJiashan

In new street additions, Asmara and Granada both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Jiashan fluctuated in its street-construction patterns. For the full network, Asmara became progressively more disconnected, while Granada grew more disconnected from 1975 through 1991-2005, then improved and Jiashan fluctuated in connectivity.