Silay in context: Street-network sprawl trends

Silay in context

4567<19751976–19901991–20052006–2020SNDi of street additions
4567<19751976–19901991–20052006–2020SNDi of entire street network
SilayNegros Occidental (Region)Philippines (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Silay plotted against Negros Occidental and Philippines. The SNDi of new construction in Silay followed a zig-zag trend with an overall increase, compared to Negros Occidental which was at its lowest in 1991-2005 and Philippines which rose steadily. Most recently, Silay's incremental SNDi rose from 3.91 to 4.85 between 1991-2005 and 2006-2020. In terms of the aggregate network, Silay ranked 3rd out of 4 cities in Negros Occidental and 37th out of 114 in Philippines as of 2020.

New Street Additions (2006–2020)

SNDi value
4.85
Rank in Philippines
23rd of 114
Rank in Negros Occidental
3rd of 4

Entire Network (Aggregate)

SNDi value
4.22
Rank in Philippines
37th of 114
Rank in Negros Occidental
3rd of 4

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

What about similarly populated cities?

246<19751976–19901991–20052006–2020SNDi of street additions
246<19751976–19901991–20052006–2020SNDi of entire street network
SilayAbu KamalBalipara

In new street additions, Silay fluctuated in its street-construction patterns, while Abu Kamal built increasingly disconnected streets over time and Balipara built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Silay fluctuated in connectivity, while Abu Kamal became progressively more disconnected and Balipara grew more disconnected from 1975 through 1976-1990, then improved.