Chengalpattu in context: Street-network sprawl trends

Chengalpattu in context

33.64.24.8<19751976–19901991–20052006–2020SNDi of street additions
33.64.24.8<19751976–19901991–20052006–2020SNDi of entire street network
ChengalpattuTamil Nadu (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Chengalpattu plotted against Tamil Nadu and India. The SNDi of new construction in Chengalpattu rose steadily, compared to Tamil Nadu which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Chengalpattu's incremental SNDi rose from 3.42 to 4.84 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chengalpattu ranked 51st out of 121 cities in Tamil Nadu and 877th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
4.84
Rank in India
964th of 1868
Rank in Tamil Nadu
56th of 121

Entire Network (Aggregate)

SNDi value
3.7
Rank in India
877th of 1868
Rank in Tamil Nadu
51st of 121

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

What about similarly populated cities?

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
ChengalpattuNgluwarBhimber Gali

In new street additions, Chengalpattu and Ngluwar both built increasingly disconnected streets over time, while Bhimber Gali fluctuated in its street-construction patterns. For the full network, Chengalpattu and Ngluwar both became progressively more disconnected, while Bhimber Gali fluctuated in connectivity.