Mankachar 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 Mankachar plotted against Assam and India. The SNDi of new construction in Mankachar rose steadily, compared to Assam which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Mankachar's incremental SNDi rose from 5.27 to 6.06 between 1991-2005 and 2006-2020. In terms of the aggregate network, Mankachar ranked 49th out of 67 cities in Assam and 1569th out of 1868 in India as of 2020.

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

What about similarly populated cities?

• Erigavo, Somalia
• Çanakkale, Turkey
• Basha, Ethiopia
• Banjar, Indonesia
• Pattambi, India
• Szeged, Hungary

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