Complex sentence: The twin arches have a constant width of with depth of arch varying from at the springing to at the crown, that are connected laterally with Reinforced concrete struts (known as Viriendal struts) and prestressed concrete box girder.
Split into simpler sentences: The twin arches have a constant width of and depth varying from at the springing to at the crown. These are connected laterally with struts (known as Viriendal struts) and box girder.