The invention relates to a bridge swivel construction support. The bridge swivel construction support comprises a foundation pit, a lower support, an upper support, an upper fixed plate and rotary discs, transverse reinforcing ribs and longitudinal reinforcing ribs are fixedly arranged between the inner walls of the foundation pit, the transverse reinforcing ribs and the longitudinal reinforcing ribs are arranged in a criss-crossed mode, the transverse reinforcing ribs penetrate through the inside of the lower support, the lower support and a lower fixed plate are integrally formed, the transverse reinforcing ribs penetrate through the inside of the upper support, the upper fixed plate and the upper support are integrally formed, the rotary discs are located on the upper support, the bottom of a center locating shaft, a first fixed disc and a second locating disc are welded integrally, annular channel plates are arranged on the rotary discs among positioning blocks, the bottoms of the annular channel plates are welded to a vertical slide plate and a transverse slide plate, and the vertical slide plate and the transverse slide plate are of an integral structure. The bridge swivel construction support is compact in overall structure, large in intensity and good in supporting effect.