Norman in context: Street-network sprawl trends

Norman in context

2.43.244.8<19751976–19901991–20052006–2020SNDi of street additions
2.43.244.8<19751976–19901991–20052006–2020SNDi of entire street network
NormanOklahoma (Region)United States (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Norman plotted against Oklahoma and United States. The SNDi of new construction in Norman rose steadily, compared to Oklahoma which rose steadily and United States which peaked in 1991-2005. Most recently, Norman's incremental SNDi rose from 4.05 to 4.25 between 1991-2005 and 2006-2020. In terms of the aggregate network, Norman ranked 3rd out of 4 cities in Oklahoma and 149th out of 333 in United States as of 2020.

New Street Additions (2006–2020)

SNDi value
4.25
Rank in United States
184th of 333
Rank in Oklahoma
2nd of 4

Entire Network (Aggregate)

SNDi value
3.09
Rank in United States
149th of 333
Rank in Oklahoma
3rd of 4

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of street additions
0.91.82.73.64.5<19751976–19901991–20052006–2020SNDi of entire street network
NormanFrameriesGuadalajara

In new street additions, Norman built increasingly disconnected streets over time, while Frameries built increasingly disconnected streets from 1975 through 1991-2005, then improved and Guadalajara built increasingly disconnected streets from 1975 through 1976-1990, then improved. For the full network, Norman and Frameries both became progressively more disconnected, while Guadalajara grew more disconnected from 1975 through 1976-1990, then improved. Norman and Guadalajara have been growing further apart in their street-network character since 1975.