Tirunelveli in context: Street-network sprawl trends

Tirunelveli in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
TirunelveliTamil Nadu (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Tirunelveli plotted against Tamil Nadu and India. The SNDi of new construction in Tirunelveli peaked in 1991-2005, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Tirunelveli's incremental SNDi fell from 3.81 to 3.57 between 1991-2005 and 2006-2020. In terms of the aggregate network, Tirunelveli ranked 28th out of 121 cities in Tamil Nadu and 605th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
3.57
Rank in India
422nd of 1868
Rank in Tamil Nadu
12th of 121

Entire Network (Aggregate)

SNDi value
3.25
Rank in India
605th of 1868
Rank in Tamil Nadu
28th of 121

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

What about similarly populated cities?

12345<19751976–19901991–20052006–2020SNDi of street additions
12345<19751976–19901991–20052006–2020SNDi of entire street network
TirunelveliCorrientesCardiff

In new street additions, Tirunelveli and Cardiff both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Corrientes fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend.