Gimpo in context: Street-network sprawl trends

Gimpo in context

1.622.42.8<19751976–19901991–20052006–2020SNDi of street additions
1.622.42.8<19751976–19901991–20052006–2020SNDi of entire street network
GimpoIncheon (Region)South Korea (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Gimpo plotted against Incheon and South Korea. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Gimpo's incremental SNDi rose from 2.18 to 2.29 between 1991-2005 and 2006-2020. In terms of the aggregate network, Gimpo ranked 1st out of 1 cities in Incheon and 34th out of 49 in South Korea as of 2020.

New Street Additions (2006–2020)

SNDi value
2.29
Rank in South Korea
13th of 49
Rank in Incheon
1st of 1

Entire Network (Aggregate)

SNDi value
2.16
Rank in South Korea
34th of 49
Rank in Incheon
1st of 1

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

What about similarly populated cities?

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
GimpoRio GrandeApartado

Gimpo, Rio Grande, and Apartadó all fluctuated in its street-construction patterns in new street construction. For the full network, Gimpo and Rio Grande both became progressively more disconnected, while Apartadó fluctuated in connectivity. Notably, Gimpo had a more sprawly network than Rio Grande in 1975 but the two have since reversed their relative ranking.