St. John's in context: Street-network sprawl trends

St. John's 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
St. John'sNewfoundland and Labrador (Region)Canada (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with St. John's plotted against Newfoundland and Labrador and Canada. The SNDi of new construction in St. John's rose steadily, compared to Newfoundland and Labrador which rose steadily and Canada which peaked in 1976-1990. Most recently, St. John's's incremental SNDi rose from 4.8 to 5.13 between 1991-2005 and 2006-2020. In terms of the aggregate network, St. John's ranked 1st out of 1 cities in Newfoundland and Labrador and 41st out of 54 in Canada as of 2020.

New Street Additions (2006–2020)

SNDi value
5.13
Rank in Canada
50th of 54
Rank in Newfoundland and Labrador
1st of 1

Entire Network (Aggregate)

SNDi value
3.06
Rank in Canada
41st of 54
Rank in Newfoundland and Labrador
1st of 1

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

What about similarly populated cities?

2468<19751976–19901991–20052006–2020SNDi of street additions
2468<19751976–19901991–20052006–2020SNDi of entire street network
St. John'sIlheusAnn Arbor

In new street additions, St. John's and Ilhéus both built increasingly disconnected streets over time, while Ann Arbor fluctuated in its street-construction patterns. For the full street network, though, all three cities follow the same trend. St. John's and Ilhéus have been growing further apart in their street-network character since 1975.