The level of street-network sprawl in new development in Kayin followed a zig-zag trend with an overall increase. To get a sense of how street development has changed in Kayin, we can consider three of its most populous cities: Hpa-An, Myawaddy and Payathonzu. Out of the three cities, Myawaddy does not follow the same trend as the region. The level of street-network sprawl in new development in Myawaddy peaked in 1976-1990.

As of 2020, the city with the most disconnected street network in Kayin is Kawkareik with an SNDi of 4.01, which is sprawly. Conversely, the most connected city is Payathonzu with an SNDi of 2.7, which is relatively well-connected. See trends for these cities: Payathonzu, Kawkareik

The level of street-network sprawl in the aggregate network in Kayin peaked in 1976-1990. To get a sense of how the aggregate street network has changed in Kayin, we can consider three of its most populous cities: Hpa-An, Myawaddy and Payathonzu. Out of the three cities, Hpa-An and Payathonzu do not follow the same trend as the region. The level of street-network sprawl in the aggregate network in Hpa-An rose steadily. The level of street-network sprawl in the aggregate network in Payathonzu followed a zig-zag trend with an overall increase.