Anse-à-Galets 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 Anse-à-Galets plotted against Ouest and Haiti. The SNDi of new construction in Anse-à-Galets was at its lowest in 1976-1990, compared to Ouest which peaked in 1991-2005 and Haiti which rose steadily. Most recently, Anse-à-Galets's incremental SNDi rose from 3.52 to 5.1 between 1991-2005 and 2006-2020. In terms of the aggregate network, Anse-à-Galets ranked 1st out of 6 cities in Ouest and 4th out of 21 in Haiti as of 2020.

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

What about similarly populated cities?

• Xianfeng, China
• Sarawa, Egypt
• Van Gia Town, Vietnam
• Gaogang, China
• Shadnagar, India
• Xiaochikou, China

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