Phú Mỹ 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 Phú Mỹ plotted against An Giang and Vietnam. The SNDi of new construction in Phú Mỹ peaked in 1991-2005, compared to An Giang which peaked in 1991-2005 and Vietnam which rose steadily. Most recently, Phú Mỹ's incremental SNDi fell from 8.8 to 7.34 between 1991-2005 and 2006-2020. In terms of the aggregate network, Phú Mỹ ranked 5th out of 7 cities in An Giang and 124th out of 126 in Vietnam as of 2020.

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

What about similarly populated cities?

• Daozhen, China
• Medenine, Tunisia
• Chachoengsao, Thailand
• Tissemsilt, Algeria
• Longmont, United States
• Piduguralla, India

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