Irri: city in Delta, Nigeria
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 Irri, Nigeria on the sprawlmap
Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Irri as of 2014, the overall level of street-network sprawl is 3.61, which is highly disconnected.
Trends in street network construction: The SNDis of street construction for the respective time periods are 1.97, 2.98, 5.83 and 5.08. Street construction in Irri increased in disconnectivity initially but has since improved. The streets constructed in 1991-2000 were the most disconnected.
Quantity of street network construction: The street network in Irri spans a total of 105 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 5.08, 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 1.97, 2.18, 2.31 and 3.61. Overall, the SNDi of the aggregate street network has risen: the street network in Irri has become more disconnected.
Irri and Delta do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Irri peaked in 1991-2000, while the SNDi of street constructions in Delta followed a zig-zag trend with an overall increase.
How do development practices in Irri fare in comparison to others in Delta? Most recently in 2001-2014, street construction in Irri was the 9th-most disconnected out of the 16 cities in Delta. Its position in the ranks since 1975 has not changed. Irri ranked 9th in 1975, 9th in 1976-1990, 3rd in 1991-2000 and 9th in 2001-2014.
Irri and Nigeria follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these peaked in 1991-2000.
How do development practices in Irri fare in comparison to others in Nigeria? Most recently in 2001-2014, street construction in Irri was the 79th-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has risen; relative to other cities in Nigeria, street construction in Irri has become more disconnected. Irri ranked 93rd in 1975, 109th in 1976-1990, 25th in 1991-2000 and 79th in 2001-2014.
Irri and Delta do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Irri rose steadily, while the SNDi of street constructions in Delta followed a zig-zag trend with an overall increase.
To date, Irri is the 8th-most disconnected out of the 16 cities in Delta. Its position in the ranks since 1975 has risen; relative to other cities in Delta, the street network in Irri has become more disconnected. Irri ranked 9th in 1975, 9th in 1976-1990, 11th in 1991-2000 and 8th in 2001-2014.
Irri and Nigeria follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these rose steadily.
To date, Irri is the 86th-most disconnected out of the 411 cities in Nigeria. Its position in the ranks since 1975 has risen; relative to other cities in Nigeria, the street network in Irri has become more disconnected. Irri ranked 93rd in 1975, 144th in 1976-1990, 143rd in 1991-2000 and 86th in 2001-2014.
As of 2015, Irri had a built-up area of 4.39 square kilometers, and a population of 127725 people.
These are some other cities with approximately the same population: