Samarra in context: Street-network sprawl trends

Samarra in context

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
SamarraSala ad-Din (Region)Iraq (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Samarra plotted against Sala ad-Din and Iraq. The SNDi of new construction in Samarra followed a zig-zag trend with an overall decrease, compared to Sala ad-Din which peaked in 1976-1990 and Iraq which peaked in 1976-1990. Most recently, Samarra's incremental SNDi rose from 1.92 to 1.95 between 1991-2005 and 2006-2020. In terms of the aggregate network, Samarra ranked 4th out of 10 cities in Sala ad-Din and 17th out of 86 in Iraq as of 2020.

New Street Additions (2006–2020)

SNDi value
1.95
Rank in Iraq
14th of 86
Rank in Sala ad-Din
2nd of 10

Entire Network (Aggregate)

SNDi value
2.08
Rank in Iraq
17th of 86
Rank in Sala ad-Din
4th of 10

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
SamarraChittorgarhIkire

While Chittorgarh and Ikire both built increasingly disconnected streets over time, Samarra fluctuated in its street-construction patterns in new street additions. Looking at the full network, Chittorgarh and Ikire both became progressively more disconnected, while Samarra grew more disconnected from 1975 through 1976-1990, then improved. Samarra and Chittorgarh have been growing further apart in their street-network character since 1975.