Akabuka 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 Akabuka plotted against Rivers and Nigeria. The SNDi of new construction in Akabuka peaked in 1991-2005, compared to Rivers which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Akabuka's incremental SNDi fell from 5.16 to 4.65 between 1991-2005 and 2006-2020. In terms of the aggregate network, Akabuka ranked 13th out of 28 cities in Rivers and 317th 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?

• Farkhor, Tajikistan
• Unaaha, Indonesia
• Rundu, Namibia
• Nansang, Myanmar
• Tshilenge, Democratic Republic of the Congo
• Ra's Tannurah, Saudi Arabia

In new street additions, Akabuka built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Farkhor built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Nansang fluctuated in its street-construction patterns. For the full network, Akabuka became progressively more disconnected, while Farkhor became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Nansang fluctuated in connectivity. Akabuka and Farkhor have been converging in their street-network character since 1975.