Agbara 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 Agbara plotted against Lagos and Nigeria. The SNDi of new construction in Agbara peaked in 1976-1990, compared to Lagos which followed a zig-zag trend with an overall increase and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Agbara's incremental SNDi fell from 6.4 to 6.21 between 1991-2005 and 2006-2020. In terms of the aggregate network, Agbara ranked 5th out of 7 cities in Lagos and 401st 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?

• Dilla, Ethiopia
• Baode, China
• Shuangcheng, China
• Muhammadabad Gohna, India
• Welkom, South Africa
• Aktau, Kazakhstan

While Dilla and Muhammadabad Gohna both built increasingly disconnected streets over time, Agbara built increasingly disconnected streets from 1975 through 1976-1990, then improved in new street additions. For the full street network, though, all three cities follow the same trend. Notably, Agbara had a more sprawly network than Muhammadabad Gohna in 1975 but the two have since reversed their relative ranking.