Pariharpur 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 Pariharpur plotted against Bihar and India. The SNDi of new construction in Pariharpur fell steadily, compared to Bihar which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Pariharpur's incremental SNDi fell from 4.18 to 3.63 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pariharpur ranked 179th out of 264 cities in Bihar and 1514th 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?

• Bitkine, Chad
• Changle, China
• Upata, Venezuela
• Takengon, Indonesia
• Mohnyin, Myanmar
• Purmerend, Netherlands

In new street additions, Pariharpur built increasingly connected streets over time, while Bitkine built increasingly disconnected streets from 1975 through 1991-2005, then improved and Takengon built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Pariharpur became progressively more connected, while Bitkine became progressively more disconnected and Takengon grew more disconnected from 1975 through 1991-2005, then improved. Pariharpur and Bitkine have been converging in their street-network character since 1975.