Chalco 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 Chalco plotted against Nebraska and United States. The SNDi of new construction in Chalco peaked in 1976-1990, compared to Nebraska which peaked in 1991-2005 and United States which peaked in 1991-2005. Most recently, Chalco's incremental SNDi fell from 2.93 to 2.72 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chalco ranked 3rd out of 3 cities in Nebraska and 165th out of 333 in United States as of 2020.

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

What about similarly populated cities?

• Tongrim, North Korea
• Jaigaon, India
• Bhopatpur, India
• Yanling, China
• Karyari, Chad
• Mersa, Ethiopia

In new street additions, Chalco and Tongrim both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Yanling fluctuated in its street-construction patterns. For the full network, Chalco grew more disconnected from 1975 through 1976-1990, then improved, while Tongrim became progressively more disconnected and Yanling became progressively more connected. Chalco and Tongrim have been growing further apart in their street-network character since 1975.