SAN FRANCISCO—The general contractor that managed San Francisco’s $2 billion transit terminal is suing the agency in charge of the project alleging faulty design and mismanagement.

Webcor Builders and Obayashi Corp. filed a lawsuit Tuesday, October 16 in San Francisco. It alleges design and planning mistakes caused the construction to spike and led to overruns that cost the  company around $150 million.

The Transbay Joint Powers Authority, which operates the Salesforce Transit Center, denied the allegations in a statement issued on Wednesday, October 17 reading:

“The Transbay Joint Powers Authority will hold Webcor/Obayashi Joint Venture responsible for their contractual commitment to deliver this project to the people of the Bay Area and the state of California. While we are still reviewing the details of the complaint, at first glance, many of the accusations that deal with delays to the project pre-date Webcor’s repeated commitments to deliver the transit center on time. The TJPA remains focused on reopening the transit center as soon as safely possible to the public and we hope that all parties will join us in that effort,” Mohammed Nuru, Chair of the Board of Directors, Transbay Joint Powers Authority.

The engineering firm Skanska USA sued Webcor, noting the contractors alleged poor instructions led to cost overruns back in May. The Millennium Tower sued the agency blaming their building’s sinking and tilting on the transit center construction project.

The Salesforce Transbay Center first opened in mid-August after a decade of planning and construction. It closed a month later after two separate cracks were found in the steel beams supporting the terminal.

TJPA does not have a date for the re-opening of the new Transbay Center, but states on its website that it will be reopened as soon as possible.

San Francisco News reached out to TJPA, but did not hear back before print.