[1] The foundations date back to the Sasanian era (3rd to 7th century C.E.

The vertical parabola ensures that the middle of the bridge is its highest point.

The horizontal parabola produces a bend to the west, strengthening it against the flow of the river.

It has two tiers of pointed arches, thirteen large ones spanning the river itself, and eight smaller ones that nest between them.

The Zayandeh River has recently been diverted about 100 meters away from the bridge towards the south, leaving an artificial lake around the bridge to protect it from further damage.