Gaogang 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 Gaogang plotted against Jiangsu and China. While Jiangsu and China both followed a zig-zag trend with an overall increase, Gaogang's new street additions followed a zig-zag trend with an overall increase. Most recently, Gaogang's incremental SNDi rose from 2.77 to 3.41 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gaogang ranked 62nd out of 101 cities in Jiangsu and 1087th out of 1843 in China as of 2020.

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

What about similarly populated cities?

• Anse-à-Galets, Haiti
• Xianfeng, China
• Sarawa, Egypt
• Shadnagar, India
• Xiaochikou, China
• Ashburn, United States

While Anse-à-Galets and Shadnagar both built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns, Gaogang fluctuated in its street-construction patterns in new street additions. Looking at the full network, Anse-à-Galets and Shadnagar both became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards, while Gaogang fluctuated in connectivity. Gaogang and Anse-à-Galets have been converging in their street-network character since 1975.