The Ain Diwar Bridge is a ruined masonry arch Roman bridge, 3.5 km northeast of the town of Ain Diwar, Syria. The bridge is within vicinity of the Syria, Iraq and Turkey border region and about 500m west of the Tigris River of which it used to cross.The Ain Diwar bridge was built in the 2nd century by the Romans to give them access to Eastern Anatolia. The Romans also previously set up the Bezabde Camp (modern day Cizre, Turkey) nearby.