Adigrat in context: Street-network sprawl trends

Adigrat in context

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

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Adigrat plotted against Tigray and Ethiopia. The SNDi of new construction in Adigrat rose steadily, compared to Tigray which followed a zig-zag trend with an overall increase and Ethiopia which followed a zig-zag trend with an overall increase. Most recently, Adigrat's incremental SNDi rose from 2.41 to 3.56 between 1991-2005 and 2006-2020. In terms of the aggregate network, Adigrat ranked 7th out of 12 cities in Tigray and 70th out of 181 in Ethiopia as of 2020.

New Street Additions (2006–2020)

SNDi value
3.56
Rank in Ethiopia
99th of 181
Rank in Tigray
8th of 12

Entire Network (Aggregate)

SNDi value
2.25
Rank in Ethiopia
70th of 181
Rank in Tigray
7th of 12

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

What about similarly populated cities?

123456<19751976–19901991–20052006–2020SNDi of street additions
123456<19751976–19901991–20052006–2020SNDi of entire street network
AdigratHuddersfieldTaojiang County

In new street additions, Adigrat built increasingly disconnected streets over time, while Huddersfield built increasingly disconnected streets from 1975 through 1991-2005, then improved and Taojiang County built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Adigrat and Huddersfield both became progressively more disconnected, while Taojiang County grew more disconnected from 1975 through 1991-2005, then improved. Adigrat and Huddersfield have been converging in their street-network character since 1975.