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Bay Bridge demolition delayed by 3 months - November 18, 2014 by Mr HomeBuilder

The next phase to tear down the old Bay Bridge has been postponed for three months.

Caltrans said Monday that the deadline to submit and open bids for the second of three big contracts on the $271 million demolition job has been pushed back from November to February.

Four potential bidders told Caltrans they needed more time to study the complicated job of tearing down the deck, support beams and steel trusses and upper piers on most of the bridge. Work already is well underway on the most westerly portion of the demolition -- removing the cantilever and other sections near Yerba Buena Island.

"The contractors wanted more engineering time to study the contract," said Caltrans spokeswoman Leah RobinsonLeach. "It's a very complex job to take down a bridge."

Another tricky part of the job will be finding a way to prevent cormorants and other birds from making homes at traditional nesting sites on old east span areas when demolition contractors need to work there.

Because state and federal wildlife rules bar disruption of nesting birds, the demolition project could become costlier and take longer if the birds are around at the wrong time.

Still, opening the bids three months later won't put birds and demolition crews at odds in the 2015 nesting season, Robinson-Leach said.

Crews on the second demolition contract will do planning and setup during the spring and summer nesting months in 2015, and not start tear down work until fall, Robinson-Leach said.

That gives the contractor time to come up with a plan for keeping the birds away during the 2016 nesting season, which is usually between February to August.

John Goodman, a spokesman for the Bay Area Toll Authority, said the potential presence of nesting birds on the bridge remains a risk that could drive up demolition costs.

Continued here:
Bay Bridge demolition delayed by 3 months

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Bay Bridge Demolition Project Delayed 6 Months Due To Nesting Birds - November 18, 2014 by Mr HomeBuilder

SAN FRANCISCO (KCBS) The demolition of the Bay Bridges old eastern span will be delayed for at least six months because of nesting birds that refuse to vacate the structure, a transportation official told KCBS.

The plan was to build new nesting areas on the new eastern span for the hundreds of cormorants, that have called the old span home for as long as its been standing, but that has not gone accordingly.

Despite installing mirrors, installing recording devices to make it look like there are a bunch of birds already therethose birds have not been fooled, Metropolitan Transportation Commission spokesman John Goodwin said. We need to take what are known as additional bird mitigation measures and that may include more extensive use of netting.

Related: Relocation Of Birds From Old Bay Bridge Could Soar To More Than $30 Million

While the work to demolish the bridges cantilever sections continues, work to tear down two other truss sections will be delayed until Caltrans can come up with another plan. Goodwin said that, currently, they dont have another other ideas on how to get the birds to moves.

We originally thought we would open bids for the second phase of the demolition during this month of 2014 and thats been pushed out at least until February, Goodwin said.

This will add more costs to the project that already has incurred overruns.

Goodwin also said that work to demolish underwater piers that hold the up the structure may also be delayed because they cannot do the work while fish migrate through the waters underneath the old span.