Alamnagar 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 Alamnagar plotted against Bihar and India. The SNDi of new construction in Alamnagar followed a zig-zag trend, 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. In terms of the aggregate network, Alamnagar ranked 10th out of 264 cities in Bihar and 155th 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?

• Nanxing, China
• Jiangshan, China
• Bhatapada, India
• Cojutepeque, El Salvador
• Hoofddorp, Netherlands
• Yongqing, China

In new street additions, Alamnagar fluctuated in its street-construction patterns, while Nanxing built increasingly disconnected streets over time and Cojutepeque built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Nanxing and Cojutepeque both became progressively more disconnected, while Alamnagar fluctuated in connectivity. Alamnagar and Nanxing have been growing further apart in their street-network character since 1975.