520 Bridge pontoon overruns hit $81 million, more to come

WSDOT has released cost figures for repairs and design changes to the first pontoons built for the new 520 Bridge. The bill? $81 million. So far.

From The Seattle Times:

The state’s costs are $9.9 million to fix damage to the first batch, when a poorly designed corner section broke apart at Grays Harbor; another $48.8 million to seal cracks in the first batch, including the drydock work; and $22.4 million for extra work needed to strengthen the second batch. Construction is now under way on the third of six batches at Grays Harbor.

The overruns will be paid to contractor Kiewit-General through the project’s risk reserve fund (a sort of rainy day budget provision) which currently stands at $100 million after the charges announced today. Given that the change orders for the cycle 2 pontoons in the Aberdeen casting basin were $22 million, adding similar work for cycles 3-6 could approach draining the remaining reserve. Those cost figures will be finalized later this year.

With the pontoon repairs now well under way, WSDOT expects the new floating bridge to open in late-2015 or early-2016.

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