Valdivia 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 Valdivia plotted against Los Ríos and Chile. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Valdivia's incremental SNDi rose from 3.07 to 3.38 between 1991-2005 and 2006-2020. In terms of the aggregate network, Valdivia ranked 1st out of 1 cities in Los Ríos and 16th 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?

• Oleh, Nigeria
• Ağrı, Turkey
• Naubatpur, India
• Châu Đốc, Vietnam
• Huichon, North Korea
• Xiajin, China

In new street additions, Valdivia fluctuated in its street-construction patterns, while Oleh built increasingly disconnected streets over time and Châu Đốc built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full network, Valdivia and Oleh both became progressively more disconnected, while Châu Đốc grew more disconnected from 1975 through 1991-2005, then improved. Valdivia and Oleh have been growing further apart in their street-network character since 1975.