Jeddah in context: Street-network sprawl trends

Jeddah in context

33.33.63.9<19751976–19901991–20052006–2020SNDi of street additions
33.33.63.9<19751976–19901991–20052006–2020SNDi of entire street network
JeddahMakkah (Region)Saudi Arabia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jeddah plotted against Makkah and Saudi Arabia. The SNDi of new construction in Jeddah rose steadily, compared to Makkah which followed a zig-zag trend with an overall increase and Saudi Arabia which followed a zig-zag trend with an overall increase. Most recently, Jeddah's incremental SNDi rose from 3.25 to 3.58 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jeddah ranked 4th out of 9 cities in Makkah and 31st out of 44 in Saudi Arabia as of 2020.

New Street Additions (2006–2020)

SNDi value
3.58
Rank in Saudi Arabia
29th of 44
Rank in Makkah
3rd of 9

Entire Network (Aggregate)

SNDi value
3.12
Rank in Saudi Arabia
31st of 44
Rank in Makkah
4th of 9

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

What about similarly populated cities?

234567<19751976–19901991–20052006–2020SNDi of street additions
234567<19751976–19901991–20052006–2020SNDi of entire street network
JeddahKochiDubai

Jeddah, Kochi, and Dubai all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Jeddah and Kochi have been growing further apart in their street-network character since 1975.