Chiguayante 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 Chiguayante plotted against Bío-Bío and Chile. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Chiguayante's incremental SNDi rose from 4.59 to 4.73 between 1991-2005 and 2006-2020. In terms of the aggregate network, Chiguayante ranked 6th out of 6 cities in Bío-Bío and 36th 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?

• Sultanganj, India
• Shrirampur, India
• Tarapur, India
• Torremolinos, Spain
• Anyue, China
• Xietang, China

In new street additions, Chiguayante and Sultanganj both fluctuated in its street-construction patterns, while Torremolinos built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend. Chiguayante and Torremolinos have been growing further apart in their street-network character since 1975.