Quillota 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 Quillota plotted against Valparaíso and Chile. The SNDi of new construction in Quillota peaked in 1991-2005, compared to Valparaíso which followed a zig-zag trend with an overall increase and Chile which followed a zig-zag trend with an overall increase. Most recently, Quillota's incremental SNDi fell from 3.6 to 2.92 between 1991-2005 and 2006-2020. In terms of the aggregate network, Quillota ranked 3rd out of 7 cities in Valparaíso and 15th out of 38 in Chile as of 2020.

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

What about similarly populated cities?

• Pato Branco, Brazil
• Chibintepa, Uzbekistan
• Xiangning, China
• Agar, India
• Nazarabad, Iran
• Mokokchung, India

In new street additions, Quillota built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pato Branco built increasingly disconnected streets over time and Agar fluctuated in its street-construction patterns. For the full network, Quillota and Pato Branco both became progressively more disconnected, while Agar fluctuated in connectivity. Quillota and Pato Branco have been converging in their street-network character since 1975.