It is forbidden to use highway bridges for pulling, hoisting and other construction operations that endanger the safety of highway bridges.
It is forbidden to use highway bridges (including the space under the bridge), highway tunnels and culverts to pile up articles, build facilities, lay high-voltage wires and transport flammable, explosive or other toxic and harmful gases and liquids.
Where a highway bridge crosses a waterway, the construction unit shall set up bridge navigation marks, bridge column marks and bridge draft marks in accordance with the relevant provisions of the state, and set up water navigation marks and pier anti-collision devices in the bridge area in accordance with national standards and industry standards. The water navigation mark in the bridge area shall be maintained by the navigation mark management institution.
Ships passing through the highway bridge shall meet the navigation clearance requirements of the highway bridge, strictly abide by the navigation rules, and shall not berth or tie cables under the highway bridge.
legal ground
"Regulations on Highway Safety Protection" Article 21 If dredging operations are carried out in accordance with the law within 500 meters of the upper and lower reaches of the river where the highway bridge crosses, it shall meet the safety requirements of the highway bridge and can only be carried out after the highway management organization confirms the safety.