Street-network Sprawl in Chikkaballapura, India

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.

Chikkaballapura: city in Karnataka, India

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 Chikkaballapura, India on the sprawlmap

Most recent snapshot: Taking into account the entire (i.e. aggregate) street network in Chikkaballapura as of 2014, the overall level of street-network sprawl is 1.07, which is relatively well-connected.

Trends in street network construction: The SNDis of street construction for the respective time periods are 0.9, 0.65, 5.24 and 0.48. Disconnectivity in street construction in Chikkaballapura follows a zig-zag trend. In 2001-2014, street construction was most disconnected, while construction was most connected in 1991-2000.

Quantity of street network construction: The street network in Chikkaballapura spans a total of 55 kilometers. It is dominated by roads constructed in 2001-2014. These roads have an SNDi of 0.48, which is relatively well-connected.

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 0.9, 1.0, 1.24 and 1.07. The aggregate street network in Chikkaballapura increased in disconnectivity initially,but the trend has turned around after 2000.

Chikkaballapura and Karnataka do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Chikkaballapura followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in Karnataka rose steadily.

How do development practices in Chikkaballapura fare in comparison to others in Karnataka? Most recently in 2001-2014, street construction in Chikkaballapura was the 98th-most disconnected out of the 147 cities in Karnataka. Its position in the ranks since 1975 has fallen; relative to other cities in Karnataka, street construction in Chikkaballapura has become more connected. Chikkaballapura ranked 63rd in 1975, 100th in 1976-1990, 7th in 1991-2000 and 98th in 2001-2014.

Chikkaballapura and India do not follow the same trend in the disconnectivity of their street network constructions. The SNDi in Chikkaballapura followed a zig-zag trend with an overall decrease, while the SNDi of street constructions in India rose steadily.

How do development practices in Chikkaballapura fare in comparison to others in India? Most recently in 2001-2014, street construction in Chikkaballapura was the 1095th-most disconnected out of the 1716 cities in India. Its position in the ranks since 1975 has fallen; relative to other cities in India, street construction in Chikkaballapura has become more connected. Chikkaballapura ranked 665th in 1975, 1024th in 1976-1990, 160th in 1991-2000 and 1095th in 2001-2014.

Chikkaballapura and Karnataka do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Chikkaballapura peaked in 1991-2000, while the SNDi of street constructions in Karnataka rose steadily.

To date, Chikkaballapura is the 115th-most disconnected out of the 147 cities in Karnataka. Its position in the ranks since 1975 has fallen; relative to other cities in Karnataka, the street network in Chikkaballapura has become more connected. Chikkaballapura ranked 63rd in 1975, 95th in 1976-1990, 98th in 1991-2000 and 115th in 2001-2014.

Chikkaballapura and India do not follow the same trend in the disconnectivity of their aggregate street networks. The SNDi in Chikkaballapura peaked in 1991-2000, while the SNDi of street constructions in India rose steadily.

To date, Chikkaballapura is the 1300th-most disconnected out of the 1716 cities in India. Its position in the ranks since 1975 has fallen; relative to other cities in India, the street network in Chikkaballapura has become more connected. Chikkaballapura ranked 665th in 1975, 1064th in 1976-1990, 1114th in 1991-2000 and 1300th in 2001-2014.

As of 2015, Chikkaballapura had a built-up area of 1.07 square kilometers, and a population of 125745 people.

These are some other cities with approximately the same population: