Bến Hải River

The demilitarized zone (DMZ) separating the two parts extended about 5 kilometers (3.1 mi) from either side of the river.

Ben Hai River
Hien Luong Bridge across the Ben Hai River
Location
Country	Vietnam
Physical characteristics
Source
• location	Annamite Mountains
Mouth
• location	South China Sea
• elevation	0 m (0 ft)
Length	100 km (62 mi)

The Bến Hải River has a total length of about 100 kilometers; its source is located in the Annamite Mountains along the border with Laos and it flows into the South China Sea at Cua Tung (Tung River mouth). In the mountains, the river is named "Rao Thanh". It flows from west to east just south of the 17th parallel and close to the northern border of Quảng Trị Province, in which it is located. At its widest point, the river is about 200 meters wide.

At the time of the partition, the principal north-south road (Highway 1) crossed the Bến Hải River over Hien Luong Bridge (also known as the "Peace Bridge"), a beam bridge built from steel by the French in 1950. After the partition, the northern portion of the bridge was painted red and the southern portion yellow. The bridge was damaged by American bombardment during the Vietnam War in 1967. U.S. jets destroyed the bridge on 5 April 1972 in order to delay invading North Vietnamese forces during the Easter Offensive. After the Paris Peace Accords, a modern bridge was built next to the old bridge.