Iringa in context: Street-network sprawl trends

Iringa in context

2.42.733.3<19751976–19901991–20052006–2020SNDi of street additions
2.42.733.3<19751976–19901991–20052006–2020SNDi of entire street network
IringaTanzania (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Iringa plotted against Tanzania. The SNDi of new construction in Iringa followed a zig-zag trend with an overall increase, while Tanzania was at its lowest in 1976-1990. Most recently, Iringa's incremental SNDi rose from 2.74 to 2.86 between 1991-2005 and 2006-2020. In terms of the aggregate network, Iringa ranked 29th out of 45 in Tanzania as of 2020.

New Street Additions (2006–2020)

SNDi value
2.86
Rank in Tanzania
27th of 45

Entire Network (Aggregate)

SNDi value
2.63
Rank in Tanzania
29th of 45

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

What about similarly populated cities?

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
IringaIbarraGonbad-e Qabus

In new street additions, Iringa and Ibarra both fluctuated in its street-construction patterns, while Gonbad-e Qabus built increasingly disconnected streets over time. For the full network, Iringa and Gonbad-e Qabus both became progressively more disconnected, while Ibarra fluctuated in connectivity. Iringa and Ibarra have been converging in their street-network character since 1975.