El Salvador
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 El Salvador on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in El Salvador as of 2014, the overall level of street-network sprawl is 4.55, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 3.51, 4.51, 5.49 and 5.8. In each period, new street development in El Salvador steadily grows more disconnected than in the last. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 1.0 points, but between 1991-2000 and 2001-2014, it rose by just 0.32.
Quantity of street network construction: The street network in El Salvador spans a total of 22985 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 4.51, 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 3.51, 4.15, 4.39 and 4.55. Overall, the SNDi of the aggregate street network has risen: the street network in El Salvador has become more disconnected. This increase has slowed: between 1975 and 1976-1990, SNDi rose by 0.64 points, but between 1991-2000 and 2001-2014, it rose by just 0.16.
The level of street-network sprawl in new development in El Salvador rose steadily. To get a sense of how street development has changed in El Salvador, we can consider three of its most populous regions: San Salvador, Santa Ana and San Miguel. Out of the three regions, San Salvador does not follow the same trend as the country. The level of street-network sprawl in new development in San Salvador peaked in 1991-2000.
How do development practices in El Salvador fare in comparison to others in the world? Most recently in 2001-2014, street construction in El Salvador was the 37th-most disconnected out of the 155 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, street construction in El Salvador has become more disconnected. El Salvador ranked 52nd in 1975, 39th in 1976-1990, 36th in 1991-2000 and 37th in 2001-2014.
The largest city in El Salvador is San Salvador, with a population of 1675600 people. Taking into account the entire (i.e. aggregate) street network in San Salvador as of 2014, the overall level of street-network sprawl is 4.92, which is highly disconnected. The level of street-network sprawl in new development in San Salvador peaked in 1991-2000.
As of 2014, the city with the most disconnected street network in El Salvador is Lourdes with an SNDi of 5.15, which is highly disconnected. Conversely, the most connected city is San Miguel with an SNDi of 2.32, which is in the 40th to 60th percentile of disconnectedness. See trends for these cities: San Miguel, Lourdes
The level of street-network sprawl in the aggregate network in El Salvador rose steadily. To get a sense of how the aggregate street network has changed in El Salvador, we can consider three of its most populous regions: San Salvador, Santa Ana and San Miguel. Disconnectivity in the most populous cities in El Salvador follow the same country trend.
To date, El Salvador is the 38th-most disconnected out of the 155 countries in the world. Its position in the ranks since 1975 has risen; relative to other countries in the world, the street network in El Salvador has become more disconnected. El Salvador ranked 52nd in 1975, 39th in 1976-1990, 38th in 1991-2000 and 38th in 2001-2014.
The largest city in El Salvador is San Salvador, with a population of 1675600 people. Taking into account the entire (i.e. aggregate) street network in San Salvador as of 2014, the overall level of street-network sprawl is 4.92, which is highly disconnected. The level of street-network sprawl in the aggregate network in San Salvador rose steadily.