Port-Gentil 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 Port-Gentil plotted against Ogooué-Maritime and Gabon. The SNDi of new construction in Port-Gentil followed a zig-zag trend with an overall increase, compared to Ogooué-Maritime which followed a zig-zag trend with an overall increase and Gabon which peaked in 1976-1990. Most recently, Port-Gentil's incremental SNDi rose from 2.69 to 3.78 between 1991-2005 and 2006-2020. In terms of the aggregate network, Port-Gentil ranked 1st out of 1 cities in Ogooué-Maritime and 1st out of 5 in Gabon as of 2020.

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

What about similarly populated cities?

• Hunyuan, China
• Botucatu, Brazil
• Likuni, Malawi
• Aqaba, Jordan
• Nanlingchengcun, China
• Tanjung Pinang, Indonesia

In new street additions, Port-Gentil fluctuated in its street-construction patterns, while Hunyuan fluctuated in its street-construction patterns and Aqaba built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Port-Gentil became progressively more disconnected, while Hunyuan became progressively more connected and Aqaba grew more disconnected from 1975 through 1991-2005, then improved. Port-Gentil and Hunyuan have been converging in their street-network character since 1975.