Street-network Sprawl in Santiago de los Caballeros, 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.

Santiago de los Caballeros: city in Santiago, 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 Santiago de los Caballeros, Dominican Republic on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Santiago de los Caballeros as of 2014, the overall level of street-network sprawl is 3.41, which is highly disconnected.

Trends in street network construction: The SNDis of street construction for the respective time periods are 1.81, 3.69, 4.36 and 4.93. In each period, new street development in Santiago de los Caballeros steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.88 points, but between 1991-2000 and 2001-2014, it rose by just 0.58.

Quantity of street network construction: The street network in Santiago de los Caballeros spans a total of 1845 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 3.69, which is highly disconnected.

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 1.81, 2.98, 3.2 and 3.41. Overall, the SNDi of the aggregate street network has risen: the street network in Santiago de los Caballeros has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.17 points, but between 1991-2000 and 2001-2014, it rose by just 0.21.

Santiago de los Caballeros and Santiago follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these rose steadily.

How do development practices in Santiago de los Caballeros fare in comparison to others in Santiago? Most recently in 2001-2014, street construction in Santiago de los Caballeros was the 1st-most disconnected out of the 1 cities in Santiago. Its position in the ranks since 1975 has not changed. Santiago de los Caballeros ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.

Santiago de los Caballeros and Dominican Republic do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Santiago de los Caballeros rose steadily, while the SNDi of street constructions in Dominican Republic followed a zig-zag trend with an overall increase.

How do development practices in Santiago de los Caballeros fare in comparison to others in Dominican Republic? Most recently in 2001-2014, street construction in Santiago de los Caballeros was the 2nd-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, street construction in Santiago de los Caballeros has become more disconnected. Santiago de los Caballeros ranked 3rd in 1975, 1st in 1976-1990, 3rd in 1991-2000 and 2nd in 2001-2014.

Santiago de los Caballeros and Santiago follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.

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

Santiago de los Caballeros and Dominican Republic follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.

To date, Santiago de los Caballeros is the 1st-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 Santiago de los Caballeros has become more disconnected. Santiago de los Caballeros ranked 3rd in 1975, 2nd in 1976-1990, 2nd in 1991-2000 and 1st in 2001-2014.

As of 2015, Santiago de los Caballeros had a built-up area of 66.41 square kilometers, and a population of 706172 people.

These are some other cities with approximately the same population: