Street-network Sprawl in Azua, Dominican Republic

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.

Azua: city in Dominican Republic

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 Azua, Dominican Republic on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Azua as of 2014, the overall level of street-network sprawl is 1.16, which is relatively well-connected.

Trends in street network construction: The SNDis of street construction for the respective time periods are -0.13, 1.09, 2.9 and nan. Data was not available in 2001-2014.

Quantity of street network construction: The street network in Azua spans a total of 177 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 1.09, 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 -0.13, 0.72, 1.16 and 1.16. The aggregate street network in Azua increased in disconnectivity initially,but the trend has turned around after 2000.

Azua and Azua 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 Azua rose steadily.

How do development practices in Azua fare in comparison to others in Azua? out of the 1 cities in Azua. Its position in the ranks since 1975 has not changed. Azua ranked 1st in 1975, 1st in 1976-1990 and 1st in 1991-2000. There was no ranking in 2001-2014 due to unavailable data.

Azua and Dominican Republic 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 Dominican Republic followed a zig-zag trend with an overall increase.

How do development practices in Azua fare in comparison to others in Dominican Republic? out of the 16 cities in Dominican Republic. Its position in the ranks since 1975 has risen; relative to other cities in Dominican Republic, street construction in Azua has become more disconnected. Azua ranked 15th in 1975, 12th in 1976-1990 and 7th in 1991-2000. There was no ranking in 2001-2014 due to unavailable data.

Azua and Azua do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Azua peaked in 1991-2000, while the SNDi of street constructions in Azua rose steadily.

To date, Azua is the 1st-most disconnected out of the 1 cities in Azua. Its position in the ranks since 1975 has not changed. Azua ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.

Azua and Dominican Republic do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Azua peaked in 1991-2000, while the SNDi of street constructions in Dominican Republic rose steadily.

To date, Azua is the 11th-most disconnected out of the 16 cities in Dominican Republic. Its position in the ranks since 1975 has risen; relative to other cities in Dominican Republic, the street network in Azua has become more disconnected. Azua ranked 15th in 1975, 13th in 1976-1990, 11th in 1991-2000 and 11th in 2001-2014.

As of 2015, Azua had a built-up area of 7.59 square kilometers, and a population of 61884 people.

These are some other cities with approximately the same population: