Highway bridge in the form of a closed frame, as an underpass to the new Dammam-Jubail railway line in Saudi Arabia.
It is about 20 meters long and skew -shaped and has a width of 13.5 meters.
It is an integral structure of reinforced concrete, based on a mat foundation.
The entire bridge, including the abutments, the wing walls and the foundation, is an integral construction without joints.
This makes the construction economical and easy to maintain