Street-network Sprawl in Koronadal, Philippines

What is Street-network sprawl?

Street-network Sprawl is a way to measure urban sprawl, worldwide, through the connectedness of the streets. Less sprawl means more connected, more walkable streets. Well-connected streets – like New York City’s grid – are more walkable and can be served by public transit.

The street network is permanent, and its connectivity affects the livability and environmental footprint of cities for decades and centuries to come. In places with more connected streets, residents drive less and walk more. A well-connected street network is associated with better outcomes for health, the environment, sustainable consumption, social integration, and equity.

We can quantify how connected street networks are with the Street Network Disconnectedness Index (SNDi).

SNDi -- our measure of street-network sprawl (disconnectedness)

The SNDi is a comprehensive measurement of “sprawl”. It captures:

A higher SNDi means less-connected streets – i.e., more sprawl. For the 10137 cities in our dataset, the average SNDi is 2.25, with half of the cities' SNDis falling between 1.08 and 3.25.

More information on the sprawl index can be found in these research papers:

To see the state of street-network sprawl across the globe, visit the sprawlmap.

Koronadal: city in South Cotabato, Philippines

What exactly constitutes the spatial extent of the city? For these aggregations, we used the Global Human Settlement Layer Urban Center Database (GHS-UCDB) to define the boundaries of the city. These cities -- or urban centers -- cover areas that are densely populated and built-up, and so may extend beyond the spatial borders of these cities that we may be familiar with. The GHS area is shaded in blue.

View Koronadal, Philippines on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Koronadal as of 2014, the overall level of street-network sprawl is 2.43, which is in the 40th to 60th percentile of disconnectedness.

Trends in street network construction: The SNDis of street construction for the respective time periods are 2.13, nan, 4.22 and 3.25. Data was not available in 1976-1990.

Quantity of street network construction: The street network in Koronadal spans a total of 150 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 2.13, which is relatively well-connected.

Effect on the aggregate network: New construction in each period adds to the total stock of streets, but does not change streets that have already been built. Therefore, it has a limited effect on the street network as a whole. The SNDis of the aggregate street network in the respective time periods are 2.13, 2.13, 2.35 and 2.43. Overall, the SNDi of the aggregate street network has risen: the street network in Koronadal has become more disconnected.

Koronadal and South Cotabato do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, while the SNDi of street constructions in South Cotabato peaked in 1991-2000.

How do development practices in Koronadal fare in comparison to others in South Cotabato? Most recently in 2001-2014, street construction in Koronadal was the 3rd-most disconnected out of the 3 cities in South Cotabato. Its position in the ranks since 1975 has not changed. Koronadal ranked 2nd in 1975, 3rd in 1991-2000 and 3rd in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.

Koronadal and Philippines do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, while the SNDi of street constructions in Philippines rose steadily.

How do development practices in Koronadal fare in comparison to others in Philippines? Most recently in 2001-2014, street construction in Koronadal was the 74th-most disconnected out of the 89 cities in Philippines. Its position in the ranks since 1975 has fallen; relative to other cities in Philippines, street construction in Koronadal has become more connected. Koronadal ranked 61st in 1975, 59th in 1991-2000 and 74th in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.

Koronadal and South Cotabato do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Koronadal rose steadily, while the SNDi of street constructions in South Cotabato rose steadily.

To date, Koronadal is the 3rd-most disconnected out of the 3 cities in South Cotabato. Its position in the ranks since 1975 has fallen; relative to other cities in South Cotabato, the street network in Koronadal has become more connected. Koronadal ranked 2nd in 1975, 3rd in 1976-1990, 3rd in 1991-2000 and 3rd in 2001-2014.

Koronadal and Philippines do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Koronadal rose steadily, while the SNDi of street constructions in Philippines rose steadily.

To date, Koronadal is the 82nd-most disconnected out of the 89 cities in Philippines. Its position in the ranks since 1975 has fallen; relative to other cities in Philippines, the street network in Koronadal has become more connected. Koronadal ranked 61st in 1975, 81st in 1976-1990, 81st in 1991-2000 and 82nd in 2001-2014.

As of 2015, Koronadal had a built-up area of 3.29 square kilometers, and a population of 91819 people.

These are some other cities with approximately the same population: