As Saddah in context: Street-network sprawl trends

As Saddah in context

34567<19751976–19901991–20052006–2020SNDi of street additions
34567<19751976–19901991–20052006–2020SNDi of entire street network
As SaddahIbb (Region)Yemen (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with As Saddah plotted against Ibb and Yemen. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, As Saddah's incremental SNDi rose from 2.91 to 4.6 between 1991-2005 and 2006-2020. In terms of the aggregate network, As Saddah ranked 4th out of 7 cities in Ibb and 41st out of 58 in Yemen as of 2020.

New Street Additions (2006–2020)

SNDi value
4.6
Rank in Yemen
28th of 58
Rank in Ibb
4th of 7

Entire Network (Aggregate)

SNDi value
5.81
Rank in Yemen
41st of 58
Rank in Ibb
4th of 7

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
As SaddahIhalavAfuze

In new street additions, As Saddah fluctuated in its street-construction patterns, while Ihalav built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Afuze built increasingly disconnected streets over time. For the full network, As Saddah grew more disconnected from 1975 through 1976-1990, then improved, while Ihalav became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Afuze became progressively more disconnected. Notably, As Saddah had a more connected network than Ihalav in 1975 but the two have since reversed their relative ranking.