St. Catharines in context: Street-network sprawl trends

St. Catharines in context

2.433.64.2<19751976–19901991–20052006–2020SNDi of street additions
2.433.64.2<19751976–19901991–20052006–2020SNDi of entire street network
St. CatharinesOntario (Region)Canada (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with St. Catharines plotted against Ontario and Canada. The SNDi of new construction in St. Catharines followed a zig-zag trend with an overall increase, compared to Ontario which peaked in 1976-1990 and Canada which peaked in 1976-1990. Most recently, St. Catharines's incremental SNDi rose from 3.69 to 4.55 between 1991-2005 and 2006-2020. In terms of the aggregate network, St. Catharines ranked 18th out of 24 cities in Ontario and 36th out of 54 in Canada as of 2020.

New Street Additions (2006–2020)

SNDi value
4.55
Rank in Canada
47th of 54
Rank in Ontario
23rd of 24

Entire Network (Aggregate)

SNDi value
2.9
Rank in Canada
36th of 54
Rank in Ontario
18th of 24

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

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
St. CatharinesSafipurMadison

While Safipur and Madison both built increasingly disconnected streets from 1975 through 1991-2005, then improved, St. Catharines fluctuated in its street-construction patterns in new street additions. For the full network, St. Catharines and Madison both became progressively more disconnected, while Safipur grew more disconnected from 1975 through 1991-2005, then improved. Notably, St. Catharines had a more sprawly network than Safipur in 1975 but the two have since reversed their relative ranking.