Amalapuram 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 Amalapuram plotted against Andhra Pradesh and India. The SNDi of new construction in Amalapuram was at its lowest in 1976-1990, compared to Andhra Pradesh which followed a zig-zag trend with an overall increase and India which followed a zig-zag trend with an overall increase. Most recently, Amalapuram's incremental SNDi rose from 3.71 to 7.05 between 1991-2005 and 2006-2020. In terms of the aggregate network, Amalapuram ranked 87th out of 91 cities in Andhra Pradesh and 1361st 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?

• Sangrur, India
• Dutsin Ma, Nigeria
• Torrejón de Ardoz, Spain
• Batticaloa, Sri Lanka
• Yakeshi/Yaysi, China
• Wollongong, Australia

In new street additions, Amalapuram built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, while Sangrur built increasingly disconnected streets over time and Batticaloa fluctuated in its street-construction patterns. Looking at the full network, Sangrur and Batticaloa both became progressively more disconnected, while Amalapuram became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards. Amalapuram and Sangrur have been converging in their street-network character since 1975.