Power communication transmission bridge

The invention relates to the technical field of a power communication industry and discloses a power communication transmission bridge. A problem that an existing bridge cannot extend downwards at anyposition to lay cables so that laying of the cable is very inconvenient is solved. The bridgecomprises two parallel side plates and a plurality of fixing parts, and a supporting part is clamped between the two side plates; the supporting part comprises two mounting strips which are parallel to each other; a plurality of supporting rods are uniformly fixed between the two mounting strips; clampinggrooves are formed in the sides, close to each other, of the two mounting strips;each fixing part comprises two mounting blocks; a fixed rod is fixed between the two mounting blocks; clamping blocksare inserted into the sides, far away from each other, of the two mounting blocks in a sliding manner; and springs are fixed to bottom ends of the clamping blocks, and L-shaped fixing plates are installed at two ends of an uppe