Brakna: 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 Brakna, Mauritania on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Brakna as of 2014, the overall level of street-network sprawl is 3.5, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 0.67, 3.22, 1.23 and 2.45. Disconnectivity in street construction in Brakna follows a zig-zag trend. In 1975, street construction was most disconnected, while construction was most connected in 1976-1990.
Quantity of street network construction: The street network in Brakna spans a total of 551 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 2.45, 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 0.67, 4.34, 4.89 and 3.5. The aggregate street network in Brakna increased in disconnectivity initially,but the trend has turned around after 2000.
The level of street-network sprawl in new development in Brakna followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Brakna, we can consider one of its most populous cities: Bogué. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Bogué followed a zig-zag trend.
How do development practices in Brakna fare in comparison to others in Mauritania? Most recently in 2001-2014, street construction in Brakna was the 2nd-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 Brakna has become more disconnected. Brakna ranked 4th in 1975, 1st in 1976-1990, 4th in 1991-2000 and 2nd in 2001-2014.
As of 2014, the city with the most disconnected street network in Brakna is Bogué with an SNDi of 1.88, which is relatively well-connected. Conversely, the most connected city is Bogué with an SNDi of 1.88, which is relatively well-connected. See trends for these cities: Bogué, Bogué
The level of street-network sprawl in the aggregate network in Brakna peaked in 1991-2000. To get a sense of how the aggregate street network has changed in Brakna, we can consider one of its most populous cities: Bogué. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in the aggregate network in Bogué followed a zig-zag trend.
To date, Brakna is 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, the street network in Brakna has become more disconnected. Brakna ranked 4th in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.