Irkutsk in context: Street-network sprawl trends

Irkutsk in context

2.83.54.24.9<19751976–19901991–20052006–2020SNDi of street additions
2.83.54.24.9<19751976–19901991–20052006–2020SNDi of entire street network
IrkutskRussia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Irkutsk plotted against Russia. The SNDi of new construction in Irkutsk peaked in 1976-1990, while Russia rose steadily. Most recently, Irkutsk's incremental SNDi fell from 4.37 to 3.61 between 1991-2005 and 2006-2020. In terms of the aggregate network, Irkutsk ranked 195th out of 252 in Russia as of 2020.

New Street Additions (2006–2020)

SNDi value
3.61
Rank in Russia
136th of 252

Entire Network (Aggregate)

SNDi value
3.07
Rank in Russia
195th of 252

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

What about similarly populated cities?

2345<19751976–19901991–20052006–2020SNDi of street additions
2345<19751976–19901991–20052006–2020SNDi of entire street network
IrkutskSambhalOrenburg

In new street additions, Irkutsk built increasingly disconnected streets from 1975 through 1976-1990, then improved, while Sambhal fluctuated in its street-construction patterns and Orenburg built increasingly disconnected streets over time. For the full street network, though, all three cities follow the same trend.