The bridge was built in the late Sasanian era on Karkheh River, parts of which constitute the modern-day border of Ilam and Lorestan provinces.

Many experts consider it an engineering feat, considering the time when it was built, the material used and the floods it has withstood during its age of 1,400 years.

[3][4] It is believed that the bridge was intentionally destroyed by the Persian army to stop or slow down the invasion of Arabs during the Muslim Conquest of Persia in the 7th century.

According to texts, the bridge was once restored by Vaali of Posht-Kooh about 200 years ago.

[1] Being on the border of Ilam and Lorestan provinces has resulted in many disputes regarding ownership of the bridge.