Interchange bridge

The utility model discloses an interchange bridge solves current bridge and occupies the more problem of land resource. The utility model discloses a bridge floor sets up the pillar that is used for the support bridge face below the bridge floor, a serial communication port, be equipped with on the bridge floor with bridge floor swing joint's elevating platform, this elevating platform and pillar sliding connection, and can drop to ground, but the elevating platform top still is equipped with the carousel of rotation, bridge floor one side still is equipped with the stand pipe, and aggravates mechanism with the elevating platform through what the guide rope linked to each other subaerial being equipped with, the guide rope is located the stand pipe. The utility model discloses ring road on the reducible bridge does not set up the ring road even, only needs to utilize the utility model discloses an elevating platform can be realized dropping to subaerially from the bridge to the area of effectual reduction bridge.