Qalat Saleh in context: Street-network sprawl trends

Qalat Saleh in context

1.82.43<19751976–19901991–20052006–2020SNDi of street additions
1.82.43<19751976–19901991–20052006–2020SNDi of entire street network
Qalat SalehMaysan (Region)Iraq (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Qalat Saleh plotted against Maysan and Iraq. While Maysan and Iraq both peaked in 1976-1990, Qalat Saleh's new street additions peaked in 1976-1990. Most recently, Qalat Saleh's incremental SNDi fell from 1.75 to 1.53 between 1991-2005 and 2006-2020. In terms of the aggregate network, Qalat Saleh ranked 2nd out of 3 cities in Maysan and 6th out of 86 in Iraq as of 2020.

New Street Additions (2006–2020)

SNDi value
1.53
Rank in Iraq
6th of 86
Rank in Maysan
2nd of 3

Entire Network (Aggregate)

SNDi value
1.78
Rank in Iraq
6th of 86
Rank in Maysan
2nd of 3

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

What about similarly populated cities?

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
Qalat SalehAsbury ParkItajuba

While Asbury Park and Itajubá both fluctuated in its street-construction patterns, Qalat Saleh built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. Looking at the full network, Asbury Park and Itajubá both became progressively more disconnected, while Qalat Saleh grew more disconnected from 1975 through 1976-1990, then improved. Notably, Qalat Saleh had a more sprawly network than Itajubá in 1975 but the two have since reversed their relative ranking.