Sarah Mildred Bridge Power Cable Repair
In the icy winter waters of New Hampshire’s Piscataqua River, Substructure working with Cianbro Corporation, executed an emergency power cable repair in 55-75 feet of water under the Sarah Mildred Long Bridge. Limited by the powerful tidal current to a brief two-hour work window around each slack tide, we had to operate quickly and efficiently to complete the repair, which included removing sections of the damaged bridge power cable, installing two new power cables, placing over a thousand grout bags to weight the cables to the seafloor and attaching anchored brackets to bridge supports to secure the new cable to the vertical faces of the bridge piers.
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