The level of street-network sprawl in new development in Nagano peaked in 1976-1990. To get a sense of how street development has changed in Nagano, we can consider three of its most populous cities: Nagano, Matsumoto and Ueda. None of the most populous cities follow the same trend as the region. The level of street-network sprawl in new development in Nagano followed a zig-zag trend with an overall increase. The level of street-network sprawl in new development in Matsumoto peaked in 1991-2005. The level of street-network sprawl in new development in Ueda rose steadily.

How do development practices in Nagano fare in comparison to others in Japan? Most recently in 2006-2020, street construction in Nagano was the 12th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has risen; relative to other regions in Japan, street construction in Nagano has become more disconnected. Nagano ranked 15th in 1975, 13th in 1976-1990, 14th in 1991-2005 and 12th in 2006-2020.

As of 2020, the city with the most disconnected street network in Nagano is Ueda with an SNDi of 2.53, which is relatively well-connected. Conversely, the most connected city is Iida with an SNDi of 1.57, which is very well-connected. See trends for these cities: Iida, Ueda

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

To date, Nagano is the 15th-most disconnected out of the 44 regions in Japan. Its position in the ranks since 1975 has not changed. Nagano ranked 15th in 1975, 16th in 1976-1990, 15th in 1991-2005 and 15th in 2006-2020.