Trarza: region in Mauritania
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 Trarza, Mauritania on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Trarza as of 2014, the overall level of street-network sprawl is 1.27, which is relatively well-connected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.19, -0.3, 1.93 and 2.53. The disconnectivity of new streets constructed in Trarza fell, then rose. In 1976-1990, new street layouts were the most connected.
Quantity of street network construction: The street network in Trarza spans a total of 737 kilometers. The period with the greatest volume of street construction was 2001-2014. These roads have an SNDi of 2.53, which is in the 40th to 60th percentile of disconnectedness.
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 0.19, -0.3, 0.67 and 1.27. The SNDi of the aggregate street network in fell at first, but Trarza has worsened in disconnectivity since 1990.
The level of street-network sprawl in new development in Trarza was at its lowest in 1976-1990. To get a sense of how street development has changed in Trarza, we can consider one of its most populous cities: Rosso Sénégal. Disconnectivity in the most populous cities in Trarza follow the same region trend.
How do development practices in Trarza fare in comparison to others in Mauritania? Most recently in 2001-2014, street construction in Trarza was the 1st-most disconnected out of the 6 regions in Mauritania. Its position in the ranks since 1975 has risen; relative to other regions in Mauritania, street construction in Trarza has become more disconnected. Trarza ranked 5th in 1975, 6th in 1976-1990, 3rd in 1991-2000 and 1st in 2001-2014.
As of 2014, the city with the most disconnected street network in Trarza is Rosso Sénégal with an SNDi of -0.75, which is very well-connected. Conversely, the most connected city is Rosso Sénégal with an SNDi of -0.75, which is very well-connected. See trends for these cities: Rosso Sénégal, Rosso Sénégal
The level of street-network sprawl in the aggregate network in Trarza was at its lowest in 1976-1990. To get a sense of how the aggregate street network has changed in Trarza, we can consider one of its most populous cities: Rosso Sénégal. Disconnectivity in the most populous cities in Trarza follow the same region trend.
To date, Trarza is the 4th-most disconnected out of the 6 regions in Mauritania. Its position in the ranks since 1975 has risen; relative to other regions in Mauritania, the street network in Trarza has become more disconnected. Trarza ranked 5th in 1975, 6th in 1976-1990, 5th in 1991-2000 and 4th in 2001-2014.