Lokoja in context: Street-network sprawl trends

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lokoja plotted against Kogi and Nigeria. The SNDi of new construction in Lokoja rose steadily, compared to Kogi which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Lokoja's incremental SNDi rose from 5.25 to 5.3 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lokoja ranked 11th out of 11 cities in Kogi and 380th out of 422 in Nigeria as of 2020.

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

What about similarly populated cities?

• Gangachara, Bangladesh
• Fuqing, China
• Sariwon, North Korea
• Provo, United States
• Qingzhou, China
• Buenaventura, Colombia

While Gangachara and Provo both built increasingly disconnected streets from 1975 through 1991-2005, then improved, Lokoja built increasingly disconnected streets over time in new street additions. For the full street network, though, all three cities follow the same trend. Lokoja and Provo have been growing further apart in their street-network character since 1975.