Adwa in context: Street-network sprawl trends

Adwa in context

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
AdwaTigray (Region)Ethiopia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Adwa plotted against Tigray and Ethiopia. The SNDi of new construction in Adwa 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, Adwa's incremental SNDi rose from 2.42 to 3.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Adwa ranked 9th out of 12 cities in Tigray and 96th out of 181 in Ethiopia as of 2020.

New Street Additions (2006–2020)

SNDi value
3.17
Rank in Ethiopia
79th of 181
Rank in Tigray
7th of 12

Entire Network (Aggregate)

SNDi value
2.56
Rank in Ethiopia
96th of 181
Rank in Tigray
9th of 12

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
AdwaUdon ThaniArgungu

In new street additions, Adwa and Udon Thani both built increasingly disconnected streets over time, while Argungu fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend.