Thiruvarur 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 Thiruvarur plotted against Tamil Nadu and India. The SNDi of new construction in Thiruvarur was at its lowest in 1976-1990, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Thiruvarur's incremental SNDi rose from 5.23 to 6.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Thiruvarur ranked 115th out of 121 cities in Tamil Nadu and 1669th 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?

• Nimes, France
• Wishaw, United Kingdom
• Khanna, India
• Swarupkathi, Bangladesh
• Yuzhno-Sakhalinsk, Russia
• Djougou, Benin

In new street additions, Thiruvarur built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Nimes built increasingly disconnected streets from 1975 through 1991-2005, then improved and Swarupkathi built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Thiruvarur became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards, while Nimes became progressively more disconnected and Swarupkathi fluctuated in connectivity. Thiruvarur and Nimes have been converging in their street-network character since 1975.