The level of street-network sprawl in new development in Oregon peaked in 1976-1990. To get a sense of how street development has changed in Oregon, we can consider three of its most populous cities: Portland, Eugene and Salem. Out of the three cities, Salem does not follow the same trend as the region. The level of street-network sprawl in new development in Salem peaked in 1991-2005.

How do development practices in Oregon fare in comparison to others in United States? Most recently in 2006-2020, street construction in Oregon was the 7th-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has risen; relative to other regions in United States, street construction in Oregon has become more disconnected. Oregon ranked 21st in 1975, 23rd in 1976-1990, 17th in 1991-2005 and 7th in 2006-2020.

As of 2020, the city with the most disconnected street network in Oregon is Salem with an SNDi of 3.67, which is relatively sprawly. Conversely, the most connected city is Medford with an SNDi of 3.0, which is moderately connected. See trends for these cities: Medford, Salem

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

To date, Oregon is the 19th-most disconnected out of the 44 regions in United States. Its position in the ranks since 1975 has risen; relative to other regions in United States, the street network in Oregon has become more disconnected. Oregon ranked 21st in 1975, 21st in 1976-1990, 19th in 1991-2005 and 19th in 2006-2020.