Three-bridge combined crossroad achieving complete interchange

The utility model relates to the construction of urban crossroads, and provides a three-bridge combined crossroad achieving complete interchange. A special viaduct for straight driving vehicles is erected on one direction road of an original crossroad, and stretches over the other road in the opposite direction. On the road of the crossroad in the opposite direction, special bridges for straight driving vehicles are respectively erected on two sides of the special viaduct for the straight driving vehicles. Three bridges are combined to achieve interchange: the vehicles can run on an original right-turning lane by turning right, small vehicles turn left and penetrate under the special bridges for the straight driving vehicles, and large vehicles turn left and penetrate under the special viaduct for the straight driving vehicles located in the next crossroad. Straight driving vehicles run on the special viaduct and the special bridges, and non-motor vehicles and pedestrians pass under the viaduct for the straight driving vehicles and the special bridges. The three-bridge combined crossroad achieving complete interchange is suitable for reconstruction of the crossroads of the urban roads, is low in reconstruction cost, short in construction cycle, energy-saving, environment protecting, and capable of effectively solving the problem of traffic jams in the urban roads.