Trimohini 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 Trimohini plotted against West Bengal and India. The SNDi of new construction in Trimohini 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, Trimohini's incremental SNDi rose from 5.73 to 6.56 between 1991-2005 and 2006-2020. In terms of the aggregate network, Trimohini ranked 81st out of 140 cities in West Bengal and 1537th 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?

• Gereida, Sudan
• Az Zulfi, Saudi Arabia
• Abhom, Jammu and Kashmir
• Lugazi, Uganda
• Concepción del Uruguay, Argentina
• Fenshui, China

In new street additions, Trimohini and Lugazi both built increasingly disconnected streets over time, while Gereida built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Trimohini and Lugazi both became progressively more disconnected, while Gereida became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Notably, Trimohini had a more connected network than Gereida in 1975 but the two have since reversed their relative ranking.