Street-network Sprawl in Masallı, Azerbaijan

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.

Masallı: city in Lankaran, Azerbaijan

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 Masallı, Azerbaijan on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Masallı as of 2014, the overall level of street-network sprawl is 5.07, which is highly disconnected.

Trends in street network construction: The SNDis of street construction for the respective time periods are 5.31, 5.24, 3.89 and 5.07. The disconnectivity of new streets constructed in Masallı fell, then rose. In 1991-2000, new street layouts were the most connected.

Quantity of street network construction: The street network in Masallı spans a total of 96 kilometers. It is dominated by roads constructed in 1976-1990. These roads have an SNDi of 5.24, 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 5.31, 5.26, 5.07 and 5.07. The SNDi of the aggregate street network in fell at first, but Masallı has worsened in disconnectivity since 2000.

Masallı and Lankaran follow the same trend in the disconnectivity of their street network constructions. The SNDi for both of these was at its lowest in 1991-2000.

How do development practices in Masallı fare in comparison to others in Lankaran? Most recently in 2001-2014, street construction in Masallı was the 1st-most disconnected out of the 3 cities in Lankaran. Its position in the ranks since 1975 has not changed. Masallı ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.

Masallı and Azerbaijan do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Masallı was at its lowest in 1991-2000, while the SNDi of street constructions in Azerbaijan was at its lowest in 1976-1990.

How do development practices in Masallı fare in comparison to others in Azerbaijan? Most recently in 2001-2014, street construction in Masallı was the 3rd-most disconnected out of the 16 cities in Azerbaijan. Its position in the ranks since 1975 has fallen; relative to other cities in Azerbaijan, street construction in Masallı has become more connected. Masallı ranked 2nd in 1975, 1st in 1976-1990, 6th in 1991-2000 and 3rd in 2001-2014.

Masallı and Lankaran do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Masallı was at its lowest in 1991-2000, while the SNDi of street constructions in Lankaran fell steadily.

To date, Masallı is the 1st-most disconnected out of the 3 cities in Lankaran. Its position in the ranks since 1975 has not changed. Masallı ranked 1st in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.

Masallı and Azerbaijan follow the same trend in the disconnectivity of their aggregate street networks. The SNDi for both of these was at its lowest in 1991-2000.

To date, Masallı is the 1st-most disconnected out of the 16 cities in Azerbaijan. Its position in the ranks since 1975 has risen; relative to other cities in Azerbaijan, the street network in Masallı has become more disconnected. Masallı ranked 2nd in 1975, 1st in 1976-1990, 1st in 1991-2000 and 1st in 2001-2014.

As of 2015, Masallı had a built-up area of 1.55 square kilometers, and a population of 65684 people.

These are some other cities with approximately the same population: