Oshawa in context: Street-network sprawl trends

Oshawa in context

2.83.23.64<19751976–19901991–20052006–2020SNDi of street additions
2.83.23.64<19751976–19901991–20052006–2020SNDi of entire street network
OshawaOntario (Region)Canada (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Oshawa plotted against Ontario and Canada. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Oshawa's incremental SNDi fell from 3.59 to 3.35 between 1991-2005 and 2006-2020. In terms of the aggregate network, Oshawa ranked 22nd out of 24 cities in Ontario and 43rd out of 54 in Canada as of 2020.

New Street Additions (2006–2020)

SNDi value
3.35
Rank in Canada
29th of 54
Rank in Ontario
16th of 24

Entire Network (Aggregate)

SNDi value
3.11
Rank in Canada
43rd of 54
Rank in Ontario
22nd of 24

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
OshawaYanshi DistrictColima

In new street additions, Oshawa and Yanshi District both built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Colima fluctuated in its street-construction patterns. For the full network, Oshawa and Colima both became progressively more disconnected, while Yanshi District grew more disconnected from 1975 through 1976-1990, then improved. Notably, Oshawa had a more connected network than Yanshi District in 1975 but the two have since reversed their relative ranking.