The Tumen Border Bridge is a bridge over the Tumen River, connecting Tumen City, Jilin Province, China, with Namyang, Onsong County, North Hamgyong Province, North Korea. It was built in 1941 by the Japanese and is 515 metres long, 6 metres high, 6 metres wide. Tumen Border Post is located there. A little upstream from the bridge is Tumen Border Railway Bridge.
During the Korean War, it was one of the border posts from which the Chinese People's Volunteer Army entered North Korea.A parallel, larger bridge is under construction since 2016. The new bridge was completed on 2019.
Wikipedia https://en.wikipedia.org/wiki/Tumen_Border_Bridge
Coordinates 42°57'15.342" N 129°51'3.234" E