Punta Arenas 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 Punta Arenas plotted against Magallanes y Antártica Chilena and Chile. The SNDi of new construction in Punta Arenas rose steadily, compared to Magallanes y Antártica Chilena which rose steadily and Chile which followed a zig-zag trend with an overall increase. Most recently, Punta Arenas's incremental SNDi rose from 2.7 to 3.74 between 1991-2005 and 2006-2020. In terms of the aggregate network, Punta Arenas ranked 1st out of 1 cities in Magallanes y Antártica Chilena and 4th out of 38 in Chile as of 2020.

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

What about similarly populated cities?

• Hamju, North Korea
• Xiangtan, China
• Guercif, Morocco
• Jianping, China
• Banja Luka, Bosnia and Herzegovina
• Qixian, China

In new street additions, Punta Arenas built increasingly disconnected streets over time, while Hamju built increasingly disconnected streets from 1975 through 1991-2005, then improved and Jianping built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Punta Arenas became progressively more disconnected, while Hamju grew more disconnected from 1975 through 1991-2005, then improved and Jianping grew more disconnected from 1975 through 1976-1990, then improved. Punta Arenas and Jianping have been converging in their street-network character since 1975.