Sattur 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 Sattur plotted against Tamil Nadu and India. The SNDi of new construction in Sattur rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Sattur's incremental SNDi rose from 5.3 to 5.46 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sattur ranked 55th out of 121 cities in Tamil Nadu and 913th 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?

• Ciudad Mante, México
• Haria Hossainpur, Bangladesh
• Shilin, China
• Unsan, North Korea
• Husainabad, India
• Catalão, Brazil

In new street additions, Sattur built increasingly disconnected streets over time, while Ciudad Mante fluctuated in its street-construction patterns and Unsan built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Sattur and Ciudad Mante both became progressively more disconnected, while Unsan grew more disconnected from 1975 through 1991-2005, then improved. Sattur and Unsan have been growing further apart in their street-network character since 1975.