Korea's first underwater road tunnel was revealed on Monday after its undersea construction was completed as part of the Geoga Bridge on the southern coast. It is also one of the world's longest immersed tube tunnels.
The 8.2-km Geoga Bridge connects Gadeok Islet near Busan and Geoje city in South Gyeongsang Province. It comprises a 4.5-km cable-stayed bridge, which was completed in May, and the newly finished 3.7-km undersea tunnel connected to the bridge section.
Once it opens on Dec. 9, the road distance between Busan and Geoje will be shortened from 140 km to 60 km, and traveling time from 2 hours and 10 minutes to 50 minutes.
