Zinna in context: Street-network sprawl trends

Zinna in context

33.544.5<19751976–19901991–20052006–2020SNDi of street additions
33.544.5<19751976–19901991–20052006–2020SNDi of entire street network
ZinnaTaraba (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zinna plotted against Taraba and Nigeria. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Zinna's incremental SNDi rose from 3.73 to 4.41 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zinna ranked 6th out of 8 cities in Taraba and 238th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
4.41
Rank in Nigeria
224th of 422
Rank in Taraba
6th of 8

Entire Network (Aggregate)

SNDi value
3.4
Rank in Nigeria
238th of 422
Rank in Taraba
6th of 8

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

What about similarly populated cities?

2.12.83.54.2<19751976–19901991–20052006–2020SNDi of street additions
2.12.83.54.2<19751976–19901991–20052006–2020SNDi of entire street network
ZinnaBehbahanAl Saff

Zinna, Behbahan, and Al Saff all fluctuated in its street-construction patterns in new street construction. For the full network, Zinna fluctuated in connectivity, while Behbahan became progressively more disconnected and Al Saff grew more disconnected from 1975 through 1976-1990, then improved. Zinna and Al Saff have been growing further apart in their street-network character since 1975.