Maintenance of the bridge poses challenges; as it is exposed to high winds, the prevailing conditions must always be considered. The limited space, particularly on the narrow walkway, makes access difficult, sometimes requiring suspended scaffolding and climbing ropes. More elaborate methods of moving supplies and equipment have included bespoke trolleys and lifting frames and helicopters. Maintenance staff wear harnesses and are tied onto elements of the bridge and, on occasion, rescue boats have been on standby in case personnel fall from the bridge.