Lethbridge in context: Street-network sprawl trends

Lethbridge in context

1.82.433.6<19751976–19901991–20052006–2020SNDi of street additions
1.82.433.6<19751976–19901991–20052006–2020SNDi of entire street network
LethbridgeAlberta (Region)Canada (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Lethbridge plotted against Alberta and Canada. The SNDi of new construction in Lethbridge peaked in 1991-2005, compared to Alberta which peaked in 1991-2005 and Canada which peaked in 1976-1990. Most recently, Lethbridge's incremental SNDi fell from 2.97 to 2.53 between 1991-2005 and 2006-2020. In terms of the aggregate network, Lethbridge ranked 1st out of 7 cities in Alberta and 2nd out of 54 in Canada as of 2020.

New Street Additions (2006–2020)

SNDi value
2.53
Rank in Canada
11th of 54
Rank in Alberta
2nd of 7

Entire Network (Aggregate)

SNDi value
2.07
Rank in Canada
2nd of 54
Rank in Alberta
1st of 7

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

What about similarly populated cities?

22.42.83.2<19751976–19901991–20052006–2020SNDi of street additions
22.42.83.2<19751976–19901991–20052006–2020SNDi of entire street network
LethbridgePulgaonPundri

In new street additions, Lethbridge and Pundri both built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Pulgaon fluctuated in its street-construction patterns. For the full network, Lethbridge and Pulgaon both became progressively more disconnected, while Pundri grew more disconnected from 1975 through 1991-2005, then improved. Lethbridge and Pulgaon have been growing further apart in their street-network character since 1975.