Zagreb in context: Street-network sprawl trends

Zagreb 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
ZagrebGrad Zagreb (Region)Croatia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Zagreb plotted against Grad Zagreb and Croatia. The SNDi of new construction in Zagreb peaked in 1991-2005, compared to Grad Zagreb which peaked in 1991-2005 and Croatia which rose steadily. Most recently, Zagreb's incremental SNDi fell from 4.97 to 4.68 between 1991-2005 and 2006-2020. In terms of the aggregate network, Zagreb ranked 1st out of 1 cities in Grad Zagreb and 2nd out of 5 in Croatia as of 2020.

New Street Additions (2006–2020)

SNDi value
4.68
Rank in Croatia
3rd of 5
Rank in Grad Zagreb
1st of 1

Entire Network (Aggregate)

SNDi value
3.15
Rank in Croatia
2nd of 5
Rank in Grad Zagreb
1st of 1

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

What about similarly populated cities?

2.73.64.55.4<19751976–19901991–20052006–2020SNDi of street additions
2.73.64.55.4<19751976–19901991–20052006–2020SNDi of entire street network
ZagrebRourkelaNasiriyah

In new street additions, Zagreb built increasingly disconnected streets from 1975 through 1991-2005, then improved, while Rourkela fluctuated in its street-construction patterns and Nasiriyah built increasingly connected streets over time. For the full network, Zagreb and Rourkela both became progressively more disconnected, while Nasiriyah became progressively more connected. Notably, Zagreb had a more connected network than Nasiriyah in 1975 but the two have since reversed their relative ranking.