Innovative cable-arch bridge proposal

The proposed bridge type is a modification from tied arch structure in which the tie cable is located in inclined position above the arch like the cables in cable-stayed bridges or rather like in extradosed bridges with low towers. The most effective tower height in cable-arch system is the lowest possible. The bridge type can also be understood as post tensioned curved girder with unbonded straight tendons over the girder. Traditional post tensioned girder is straight and the tendons are curved. The cable-arch type bridge allows new architectural forms, especially for pedestrian bridges. Several different applications are possible.