Silapathar 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 Silapathar plotted against Assam and India. The SNDi of new construction in Silapathar rose steadily, compared to Assam which rose steadily and India which followed a zig-zag trend with an overall increase. Most recently, Silapathar's incremental SNDi rose from 6.05 to 7.35 between 1991-2005 and 2006-2020. In terms of the aggregate network, Silapathar ranked 31st out of 67 cities in Assam and 1013th 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?

• Mahasamund, India
• Lüleburgaz, Turkey
• Wangjiang, China
• Deeg, India
• Mudon, Myanmar
• Newmarket, Canada

In new street additions, Silapathar built increasingly disconnected streets over time, while Mahasamund built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns and Deeg fluctuated in its street-construction patterns. For the full network, Silapathar and Deeg both became progressively more disconnected, while Mahasamund became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Silapathar and Mahasamund have been converging in their street-network character since 1975.