Sundarnagar 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 Sundarnagar plotted against Himachal Pradesh and India. The SNDi of new construction in Sundarnagar was at its lowest in 1976-1990, compared to Himachal Pradesh which was at its lowest in 1976-1990 and India which followed a zig-zag trend with an overall increase. Most recently, Sundarnagar's incremental SNDi rose from 5.42 to 7.59 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sundarnagar ranked 2nd out of 6 cities in Himachal Pradesh and 1273rd 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?

• Allada, Benin
• Kirundo, Burundi
• Idama, Nigeria
• Puerto Padre, Cuba
• Bhatapada, India
• Jiangshan, China

While Allada and Puerto Padre both built increasingly disconnected streets over time, Sundarnagar built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns in new street additions. Looking at the full network, Allada and Puerto Padre both became progressively more disconnected, while Sundarnagar became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Sundarnagar and Allada have been converging in their street-network character since 1975.