Isulan 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 Isulan plotted against Sultan Kudarat and Philippines. While Sultan Kudarat and Philippines both rose steadily, Isulan's new street additions rose steadily. Most recently, Isulan's incremental SNDi rose from 4.36 to 5.9 between 1991-2005 and 2006-2020. In terms of the aggregate network, Isulan ranked 1st out of 2 cities in Sultan Kudarat and 4th 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?

• Ayteke Bi, Kazakhstan
• Akçay, Turkey
• Kebuyutan, Indonesia
• Sidi Moussa, Algeria
• Comalcalco, México
• Kunjah, Pakistan

In new street additions, Isulan built increasingly disconnected streets over time, while Ayteke Bi built increasingly connected streets from 1975 through 1991-2005, then shifted to more disconnected patterns and Sidi Moussa fluctuated in its street-construction patterns. For the full network, Isulan became progressively more disconnected, while Ayteke Bi became more connected from 1975 through 1991-2005, then grew more sprawly from 1991-2005 onwards and Sidi Moussa fluctuated in connectivity. Notably, Isulan had a more connected network than Ayteke Bi in 1975 but the two have since reversed their relative ranking.