Manny Crisostomo/mcrisostomo@sacbee.com

The strands of the main cable of the San Francisco-Oakland Bay Bridge suspension span are anchored in two chambers with each chamber designed to be sealed against water and are dehumidified. Here plastic tape was used to bind steel wires that make up each strand. Rain and humidity degraded some of the plastic, promoting corrosion underneath. The Sacramento Bee found that the chambers were open to the elements during construction, and have been subject to leaks since then. The strands and anchor rods have rusted - a significant problem for the new span, according to experts.

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