Wireless electric cut-off valve for bridge and bridge environment-friendly drainage system

The invention discloses a wireless electric cut-off valve for a bridge and an environment-friendly drainage system for the bridge. The wireless electric cut-off valve for the bridge comprises a drainage pipe, a water outlet of the drainage pipe is connected with a valve in a sealing mode, and a valve cover is arranged on the valve; a motor; the mechanical linkage structure is connected with the motor, the tail end of the mechanical linkage structure is connected with the valve cover, and the mechanical linkage structure is driven by the motor to move the valve cover so as to open and close the drainage pipe; the control center is electrically connected with and controls the motor, and the control center further comprises a PH judgment module which is connected with a PH sensor and receives real-time detection data transmitted by the PH sensor; and the wireless communication control module is connected with the PH judgment module and controls the mechanical linkage structure to move according to the PH judgmen