The level of street-network sprawl in new development in Kagawa followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Kagawa, we can consider two of its most populous cities: Takamatsu and Marugame. Out of the two cities, Marugame does not follow the same trend as the region. The level of street-network sprawl in new development in Marugame rose steadily.

How do development practices in Kagawa fare in comparison to others in Japan? Most recently in 2006-2020, street construction in Kagawa was the 39th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, street construction in Kagawa has become more connected. Kagawa ranked 32nd in 1975, 34th in 1976-1990, 37th in 1991-2005 and 39th in 2006-2020.

As of 2020, the city with the most disconnected street network in Kagawa is Takamatsu with an SNDi of 3.07, which is moderately connected. Conversely, the most connected city is Marugame with an SNDi of 2.72, which is relatively well-connected. See trends for these cities: Marugame, Takamatsu

The level of street-network sprawl in the aggregate network in Kagawa rose steadily. To get a sense of how the aggregate street network has changed in Kagawa, we can consider two of its most populous cities: Takamatsu and Marugame. Disconnectivity in the most populous cities in Kagawa follow the same region trend.

To date, Kagawa is the 36th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has fallen; relative to other regions in Japan, the street network in Kagawa has become more connected. Kagawa ranked 32nd in 1975, 31st in 1976-1990, 35th in 1991-2005 and 36th in 2006-2020.