Sonbarsa Kacheri in context: Street-network sprawl trends

Sonbarsa Kacheri in context

45678<19751976–19901991–20052006–2020SNDi of street additions
45678<19751976–19901991–20052006–2020SNDi of entire street network
Sonbarsa KacheriBihar (Region)India (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Sonbarsa Kacheri plotted against Bihar and India. The SNDi of new construction in Sonbarsa Kacheri rose 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, Sonbarsa Kacheri's incremental SNDi rose from 6.77 to 7.7 between 1991-2005 and 2006-2020. In terms of the aggregate network, Sonbarsa Kacheri ranked 233rd out of 264 cities in Bihar and 1711th out of 1868 in India as of 2020.

New Street Additions (2006–2020)

SNDi value
7.7
Rank in India
1643rd of 1868
Rank in Bihar
225th of 264

Entire Network (Aggregate)

SNDi value
6.16
Rank in India
1711th of 1868
Rank in Bihar
233rd of 264

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

468<19751976–19901991–20052006–2020SNDi of street additions
468<19751976–19901991–20052006–2020SNDi of entire street network
Sonbarsa KacheriYongjiFatwah

In new street additions, Sonbarsa Kacheri built increasingly disconnected streets over time, while Yongji built increasingly disconnected streets from 1975 through 1976-1990, then improved and Fatwah built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Sonbarsa Kacheri and Fatwah both became progressively more disconnected, while Yongji grew more disconnected from 1975 through 1976-1990, then improved. Notably, Sonbarsa Kacheri had a more connected network than Fatwah in 1975 but the two have since reversed their relative ranking.