San Andrés 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 San Andrés plotted against San Andrés y Providencia and Colombia. While San Andrés y Providencia and Colombia both followed a zig-zag trend with an overall increase, San Andrés's new street additions followed a zig-zag trend with an overall increase. Most recently, San Andrés's incremental SNDi rose from 4.7 to 6.72 between 1991-2005 and 2006-2020. In terms of the aggregate network, San Andrés ranked 1st out of 1 cities in San Andrés y Providencia and 79th out of 83 in Colombia as of 2020.

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

What about similarly populated cities?

• Muddebihala, India
• Awlad Yehia Qibly, Egypt
• Aboisso, Côte d'Ivoire
• Gravatá, Brazil
• Daulatpur, Bangladesh
• Suji, China

In new street additions, San Andrés fluctuated in its street-construction patterns, while Muddebihala built increasingly disconnected streets from 1975 through 1991-2005, then improved and Gravatá built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, San Andrés became progressively more disconnected, while Muddebihala grew more disconnected from 1975 through 1991-2005, then improved and Gravatá became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. San Andrés and Gravatá have been growing further apart in their street-network character since 1975.