Bolpur 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 Bolpur plotted against West Bengal and India. The SNDi of new construction in Bolpur rose steadily, compared to West Bengal which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Bolpur's incremental SNDi rose from 5.25 to 6.21 between 1991-2005 and 2006-2020. In terms of the aggregate network, Bolpur ranked 74th out of 140 cities in West Bengal and 1458th 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?

• Gu'an, China
• Sanzhouyi, China
• Le Mans, France
• Tirwaganj, India
• Tomakomai, Japan
• Tuni, India

In new street additions, Bolpur and Tirwaganj both built increasingly disconnected streets over time, while Gu'an fluctuated in its street-construction patterns. For the full network, Bolpur and Tirwaganj both became progressively more disconnected, while Gu'an grew more disconnected from 1975 through 1976-1990, then improved. Bolpur and Gu'an have been converging in their street-network character since 1975.