A load detecting device for attachment to a structure under load comprises a carrier unit and a plurality of strain gages. The carrier unit comprises a first and a second mounting section arranged along a longitudinal axis and connected by a sensing section, wherein the plurality of strain gages are arranged at the sensing section of the carrier unit. The sensing section includes two connecting elements extending along the longitudinal axis between the first mounting section and the second mounting section, each of the connecting elements being curved and having a convex side, the convex sides of the two connecting elements facing each other.