Jiangyin 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 Jiangyin plotted against Fujian and China. The SNDi of new construction in Jiangyin fell steadily, compared to Fujian which peaked in 1976-1990 and China which followed a zig-zag trend with an overall increase. Most recently, Jiangyin's incremental SNDi fell from 6.85 to 5.13 between 1991-2005 and 2006-2020. In terms of the aggregate network, Jiangyin ranked 75th out of 75 cities in Fujian as of 2020.

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

What about similarly populated cities?

• Limbdi, India
• Merta City, India
• Jingle, China
• Zhujiajiao, China
• Ulaan Moron, China
• Tonghua, China

In new street additions, Jiangyin built increasingly connected streets over time, while Limbdi fluctuated in its street-construction patterns and Zhujiajiao built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Jiangyin became progressively more connected, while Limbdi fluctuated in connectivity and Zhujiajiao grew more disconnected from 1975 through 1976-1990, then improved. Jiangyin and Limbdi have been converging in their street-network character since 1975.