4 layers of road traffic bridge in 8 two -way lanes

4 layers of road traffic bridge in 8 two -way lanes, traffic bridge is by a plurality of pontics, transversely and vertically hand over misalignment cloth to form, the pontic includes the big stand of bridge that a plurality of groups vertical spacing set up, set up the big crossbeam of convex between the big stand of bridge, erect the concrete road surface on the big crossbeam of convex, the concrete road surface sets up to upper and lower spaced three -layer, constitute 4 layers jointly with the road surface of bottom, the second floor is the bus layer of traveling, the third layer is the freight train, the passenger car drive layer, the fourth layer is the distant dolly layer of traveling, third layer and fourth layer all are provided with to get on or off the bus uses the lane, second floor bus go the layer do not establish about the lane, only be provided with bus station platform and on -board and off -board ladder. Simple structure can effectively shunt and distinguish various vehicle, and the trip tha