Voinjama in context: Street-network sprawl trends

Voinjama in context

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
VoinjamaLofa (Region)Liberia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Voinjama plotted against Lofa and Liberia. The SNDi of new construction in Voinjama rose steadily, compared to Lofa which rose steadily and Liberia which followed a zig-zag trend with an overall increase. Most recently, Voinjama's incremental SNDi rose from 4.55 to 6.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Voinjama ranked 2nd out of 2 cities in Lofa and 4th out of 9 in Liberia as of 2020.

New Street Additions (2006–2020)

SNDi value
6.63
Rank in Liberia
5th of 9
Rank in Lofa
2nd of 2

Entire Network (Aggregate)

SNDi value
4.98
Rank in Liberia
4th of 9
Rank in Lofa
2nd of 2

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
VoinjamaUruk EsietCove

Voinjama, Uruk Esiet, and Covè all built increasingly disconnected streets over time in new street construction. The same pattern holds for the full street network. Notably, Voinjama had a more connected network than Uruk Esiet in 1975 but the two have since reversed their relative ranking.