Bridge Expansion Joint for Bridges Near Dams and Reservoirs

Bridge expansion joints near dams and reservoirs must be designed to minimize the risk of pollution to the reservoir water and to comply with the safety requirements of the dam authority. Water quality protection for joints near reservoirs requires the joint to be designed to prevent any joint materials from contaminating the reservoir water. The joint materials must be non-toxic and must not leach harmful substances into the water. The maintenance activities must be planned to prevent any waste materials from entering the reservoir. Hydraulic safety requirements for joints near dams may restrict the use of heavy equipment and vibration-generating activities near the dam. The contractor must comply with all hydraulic safety requirements and must obtain the required permits before performing any activities near the dam. Access restrictions for joint installation near dams may limit the times and routes for accessing the dam site. The contractor must comply with all access restrictions and must not enter restricted areas without authorization. All vehicles and equipment must be inspected before entering the dam site. Emergency procedures for joint installation near dams must include procedures for responding to dam safety emergencies. The contractor must be briefed on the dam emergency action plan and must know the evacuation routes and assembly points. Maintenance safety requirements for joints near dams are the same as for installation activities. The maintenance contractor must comply with all safety requirements of the dam authority and must obtain the required permits before entering the dam site.