Jega in context: Street-network sprawl trends

Jega in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
JegaKebbi (Region)Nigeria (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Jega plotted against Kebbi and Nigeria. The SNDi of new construction in Jega peaked in 1976-1990, compared to Kebbi which followed a zig-zag trend with an overall increase and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Jega's incremental SNDi fell from 1.76 to 1.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jega ranked 5th out of 12 cities in Kebbi and 64th out of 422 in Nigeria as of 2020.

New Street Additions (2006–2020)

SNDi value
1.73
Rank in Nigeria
38th of 422
Rank in Kebbi
4th of 12

Entire Network (Aggregate)

SNDi value
1.88
Rank in Nigeria
64th of 422
Rank in Kebbi
5th of 12

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

What about similarly populated cities?

1234<19751976–19901991–20052006–2020SNDi of street additions
1234<19751976–19901991–20052006–2020SNDi of entire street network
JegaMetroSan Fernando del Valle de Catamarca

In new street additions, Jega built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Metro built increasingly disconnected streets over time and San Fernando del Valle de Catamarca fluctuated in its street-construction patterns. For the full network, Jega and San Fernando del Valle de Catamarca both grew more disconnected from 1975 through 1976-1990, then improved, while Metro became progressively more disconnected. Jega and Metro have been growing further apart in their street-network character since 1975.