Nine Mile Corner 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 Nine Mile Corner plotted against Enugu and Nigeria. The SNDi of new construction in Nine Mile Corner peaked in 1991-2005, compared to Enugu which rose steadily and Nigeria which followed a zig-zag trend with an overall increase. Most recently, Nine Mile Corner's incremental SNDi fell from 6.35 to 4.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Nine Mile Corner ranked 7th out of 11 cities in Enugu and 356th 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?

• Engenheiro Pedreira, Brazil
• Makrahi, India
• Humanabad, India
• Kelowna, Canada
• Kakenge, Democratic Republic of the Congo
• Kuchiamora, Bangladesh

In new street additions, Nine Mile Corner built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Engenheiro Pedreira built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Kelowna built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Nine Mile Corner and Kelowna both became progressively more disconnected, while Engenheiro Pedreira became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Nine Mile Corner and Engenheiro Pedreira have been growing further apart in their street-network character since 1975.