Saint-Jérôme in context: Street-network sprawl trends

Saint-Jerome 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
Saint-JeromeQuebec (Region)Canada (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Saint-Jérôme plotted against Québec and Canada. The SNDi of new construction in Saint-Jérôme rose steadily, compared to Québec which followed a zig-zag trend with an overall increase and Canada which peaked in 1976-1990. Most recently, Saint-Jérôme's incremental SNDi rose from 3.18 to 3.9 between 1991-2005 and 2006-2020. In terms of the aggregate network, Saint-Jérôme ranked 3rd out of 10 cities in Québec and 17th out of 54 in Canada as of 2020.

New Street Additions (2006–2020)

SNDi value
3.9
Rank in Canada
41st of 54
Rank in Québec
5th of 10

Entire Network (Aggregate)

SNDi value
2.55
Rank in Canada
17th of 54
Rank in Québec
3rd of 10

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

What about similarly populated cities?

481216<19751976–19901991–20052006–2020SNDi of street additions
481216<19751976–19901991–20052006–2020SNDi of entire street network
Saint-JeromeSungaiguntungArogbo

In new street additions, Saint-Jérôme built increasingly disconnected streets over time, while Sungaiguntung fluctuated in its street-construction patterns and Arogbo built increasingly disconnected streets from 1975 through 1991-2005, then improved. For the full street network, though, all three cities follow the same trend.