Ligao 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 Ligao plotted against Albay and Philippines. The SNDi of new construction in Ligao followed a zig-zag trend with an overall increase, compared to Albay which was at its lowest in 1976-1990 and Philippines which rose steadily. Most recently, Ligao's incremental SNDi rose from 3.09 to 4.71 between 1991-2005 and 2006-2020. In terms of the aggregate network, Ligao ranked 1st out of 3 cities in Albay and 5th out of 114 in Philippines as of 2020.

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

What about similarly populated cities?

• Bento Gonçalves, Brazil
• Green Bay, United States
• Balua, India
• Notsé, Togo
• Caxito, Angola
• Pingshan, China

In new street additions, Ligao fluctuated in its street-construction patterns, while Bento Gonçalves built increasingly disconnected streets over time and Notsé built increasingly connected streets from 1975 through 1976-1990, then shifted to more disconnected patterns. For the full network, Ligao fluctuated in connectivity, while Bento Gonçalves became progressively more disconnected and Notsé became more connected from 1975 through 1976-1990, then grew more sprawly from 1976-1990 onwards. Notably, Ligao had a more sprawly network than Bento Gonçalves in 1975 but the two have since reversed their relative ranking.