Street-network Sprawl in Los Tanques, Venezuela

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.

Los Tanques: city in Aragua, Venezuela

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 Los Tanques, Venezuela on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Los Tanques as of 2014, the overall level of street-network sprawl is 2.01, which is relatively well-connected.

Trends in street network construction: The SNDis of street construction for the respective time periods are 1.85, nan, 4.05 and 4.52. Data was not available in 1976-1990.

Quantity of street network construction: The street network in Los Tanques spans a total of 160 kilometers. It is dominated by roads constructed prior to 1975. These roads have an SNDi of 1.85, 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 1.85, 1.85, 1.9 and 2.01. Overall, the SNDi of the aggregate street network has risen: the street network in Los Tanques has become more disconnected.

Los Tanques and Aragua do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, as well as the Aragua's street network construction.

How do development practices in Los Tanques fare in comparison to others in Aragua? Most recently in 2001-2014, street construction in Los Tanques was the 4th-most disconnected out of the 7 cities in Aragua. Its position in the ranks since 1975 has fallen; relative to other cities in Aragua, street construction in Los Tanques has become more connected. Los Tanques ranked 6th in 1975, 2nd in 1991-2000 and 4th in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.

Los Tanques and Venezuela do not follow the same trend in the disconnectivity of their street network constructions. There was not enough data from the city, as well as the Venezuela's street network construction.

How do development practices in Los Tanques fare in comparison to others in Venezuela? Most recently in 2001-2014, street construction in Los Tanques was the 33rd-most disconnected out of the 75 cities in Venezuela. Its position in the ranks since 1975 has fallen; relative to other cities in Venezuela, street construction in Los Tanques has become more connected. Los Tanques ranked 55th in 1975, 30th in 1991-2000 and 33rd in 2001-2014. There was no ranking in 1976-1990 due to unavailable data.

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

To date, Los Tanques is the 6th-most disconnected out of the 7 cities in Aragua. Its position in the ranks since 1975 has not changed. Los Tanques ranked 6th in 1975, 6th in 1976-1990, 6th in 1991-2000 and 6th in 2001-2014.

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

To date, Los Tanques is the 54th-most disconnected out of the 75 cities in Venezuela. Its position in the ranks since 1975 has risen; relative to other cities in Venezuela, the street network in Los Tanques has become more disconnected. Los Tanques ranked 55th in 1975, 55th in 1976-1990, 55th in 1991-2000 and 54th in 2001-2014.

As of 2015, Los Tanques had a built-up area of 6.99 square kilometers, and a population of 67285 people.

These are some other cities with approximately the same population: