Solwezi in context: Street-network sprawl trends

Solwezi in context

2.533.54<19751976–19901991–20052006–2020SNDi of street additions
2.533.54<19751976–19901991–20052006–2020SNDi of entire street network
SolweziNorth-Western (Region)Zambia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Solwezi plotted against North-Western and Zambia. While North-Western and Zambia both rose steadily, Solwezi's new street additions rose steadily. Most recently, Solwezi's incremental SNDi rose from 3.13 to 3.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Solwezi ranked 1st out of 2 cities in North-Western and 26th out of 30 in Zambia as of 2020.

New Street Additions (2006–2020)

SNDi value
3.46
Rank in Zambia
14th of 30
Rank in North-Western
1st of 2

Entire Network (Aggregate)

SNDi value
3.25
Rank in Zambia
26th of 30
Rank in North-Western
1st of 2

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
SolweziKottarakkaraChongming

In new street additions, Solwezi built increasingly disconnected streets over time, while Kottarakkara fluctuated in its street-construction patterns and Chongming built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Solwezi and Kottarakkara both became progressively more disconnected, while Chongming grew more disconnected from 1975 through 1991-2005, then improved. Solwezi and Chongming have been converging in their street-network character since 1975.