Astane cable-stayed bridge is the second largest all-metal bridge in the Iran, weighing 900 tons. This bridge has a double-arched pylon with a height of 42 meters and a weight of 85 tons. The total length of the trapezoidal shaft is 164 meters. Complete sandblasting of the project with sa 2.5 grade and spraying three layers of zinc rich paint, polyamide and polyurethane. 50 mm sheet rolling. Installing the structure with a 360 ton chain wheel crane and transporting parts with a bogie tractor.