Two transmission towers on the Rappahannock River are undergoing foundation repairs by Crofton’s divers. Each tower, which have twenty-four piles total, will undergo restoration of foundation concrete caps and piles. This restoration will increase the foundations structural capacity. Normally this would be executed by dewatering, using large stackable cofferdams. Due to the soft bottom, which will not support such weight, the restoration is being performed underwater. This means that all the underwater work is being done in zero visibility, high currents, and concrete is being restored using a tremie pour method. Some coordination with the Coast Guard was required in the beginning, as all work is being performed in open water. Otherwise, crews communicate regularly with individual vessels. There are three dive teams and a full construction crew on site as well as numerous Crofton cranes, barges, and tugs. We thank all the crew members committed to the success of this project and look forward to its continued progress!
