The utility model discloses a double -deck continuous bridge of RPC steel purlin combination bridge face, double -deck bridge floor of combination and combination, purlin box roof beam is drawn together to RPC steel purlin combination bridge bread, purlin box roof beam includes the roof, locate the lower pterygoid lamina of bottom and two blocks of webs locating both sides, there is the RPC portion of putting more energy into two web lower part both sides rigid coupling respectively, the RPC portion of putting more energy into is including die block board and RPC layer, die block board one endrigid coupling is in the web lower part, the other end outwards extends along the direction of purlin box roof beam both sides, RPC fills on the layer in the die block board, the web encloses in thesynthetic region with lower pterygoid lamina both sides, perpendicular rigid coupling has the needle beam on the web, the rigid coupling has bridge floor steel bottom plate on the needle beam, the RPCdecking has been pour on the bridge floor steel bottom plate. The utility model discloses a lower floor's bridge floor is foretell RPC steel purlin combination bridge face in the double -deck bridgefloor. The utility model discloses the bridge floor of double -deck continuous bridge is the double -deck bridge floor of above -mentioned RPC steel purlin combination. The utility model has the advantages of intensity height, light in weight, good, the antifatigue, longe -lived of bearing.