• News
  • SAN DIEGO
  • Construction

Report: California's bridges, overcrossings safe

SACRAMENTO, Calif. (AP) -- The state transportation department said Thursday it has determined that the foundations underpinning thousands of bridges, overcrossings and other structures throughout California are safe.

The department undertook an extensive review of its testing data after a series of stories in The Sacramento Bee raised questions about testing of the concrete foundations on the new eastern span of the Bay Bridge.

In its review, CalTrans said irregularities were “exceedingly rare” and limited in scope.

“The subject matter may be complicated, but the conclusion is simple: California's transportation infrastructure rests on dependable foundations,” the agency's director, Malcolm Dougherty, said in a letter to state Sen. Mark DeSaulnier.

DeSaulnier, D-Concord, chairs the Senate transportation committee and convened a hearing on the matter last year. At the time, he asked for an independent review by the Legislative Analyst's Office, a report he expects to receive in the next few months.

He said it was critical that the foundation-testing data be thoroughly examined before the scheduled opening of the new span, which is the eastern half of a bridge that connects San Francisco to Oakland and Berkeley.

The $6.3 billion bridge is expected to open by the end of the year.

“We know that the existing bridge is not safe,” DeSaulnier said.

The Bee found that a CalTrans technician who tested the structural integrity of the new span's main tower falsified tests on other projects. The newspaper's reporting also raised questions about whether a 19-foot section of concrete in that foundation had been allowed to harden to the required strength.

CalTrans said experts who analyzed more than 23,000 tests found that the results were “demonstrably unreliable” in just 11 cases. Engineers then conducted structural tests to determine whether the concrete was stable.

“In every single case, the structures were found to withstand the stresses for which they were designed,” the agency's director said in his letter.

Despite its positive findings, the agency said it was implementing changes. They include subjecting test data to a quality control assessment as a way to verify the accuracy of results and requiring greater oversight of the testing operations in the field.

Leave Your Comment

Comments are moderated by SDDT, in accordance with the SDDT Comment Policy, and may not appear on this commentary until they have been reviewed and deemed appropriate for posting. Also, due to the volume of comments we receive, not all comments will be posted.

SDDT Comment Policy: SDDT encourages you to add a comment to this discussion. You may not post any unlawful, threatening, defamatory, obscene, pornographic or other material that would violate the law. All comments should be relevant to the topic and remain respectful of other authors and commenters. You are solely responsible for your own comments, the consequences of posting those comments, and the consequences of any reliance by you on the comments of others. By submitting your comment, you hereby give SDDT the right, but not the obligation, to post, air, edit, exhibit, telecast, cablecast, webcast, re-use, publish, reproduce, use, license, print, distribute or otherwise use your comment(s) and accompanying personal identifying and other information you provide via all forms of media now known or hereafter devised, worldwide, in perpetuity. SDDT Privacy Statement.

User Response
0 UserComments

Leave Your Comment

Comments are moderated by SDDT, in accordance with the SDDT Comment Policy, and may not appear on this commentary until they have been reviewed and deemed appropriate for posting. Also, due to the volume of comments we receive, not all comments will be posted.

SDDT Comment Policy: SDDT encourages you to add a comment to this discussion. You may not post any unlawful, threatening, defamatory, obscene, pornographic or other material that would violate the law. All comments should be relevant to the topic and remain respectful of other authors and commenters. You are solely responsible for your own comments, the consequences of posting those comments, and the consequences of any reliance by you on the comments of others. By submitting your comment, you hereby give SDDT the right, but not the obligation, to post, air, edit, exhibit, telecast, cablecast, webcast, re-use, publish, reproduce, use, license, print, distribute or otherwise use your comment(s) and accompanying personal identifying and other information you provide via all forms of media now known or hereafter devised, worldwide, in perpetuity. SDDT Privacy Statement.