Kolpino in context: Street-network sprawl trends

Kolpino in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
KolpinoCity of St. Petersburg (Region)Russia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Kolpino plotted against City of St. Petersburg and Russia. The SNDi of new construction in Kolpino peaked in 1991-2005, compared to City of St. Petersburg which rose steadily and Russia which rose steadily. Most recently, Kolpino's incremental SNDi fell from 2.87 to 1.62 between 1991-2005 and 2006-2020. In terms of the aggregate network, Kolpino ranked 3rd out of 3 cities in City of St. Petersburg and 90th out of 252 in Russia as of 2020.

New Street Additions (2006–2020)

SNDi value
1.62
Rank in Russia
4th of 252
Rank in City of St. Petersburg
1st of 3

Entire Network (Aggregate)

SNDi value
2.21
Rank in Russia
90th of 252
Rank in City of St. Petersburg
3rd of 3

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

What about similarly populated cities?

1.522.53<19751976–19901991–20052006–2020SNDi of street additions
1.522.53<19751976–19901991–20052006–2020SNDi of entire street network
KolpinoPilsenZuru

While Pilsen and Zuru both built increasingly disconnected streets over time, Kolpino built increasingly disconnected streets from 1975 through 1991-2005, then improved in new street additions. Looking at the full network, Pilsen and Zuru both became progressively more disconnected, while Kolpino fluctuated in connectivity. Notably, Kolpino had a more sprawly network than Zuru in 1975 but the two have since reversed their relative ranking.