French construction giant Vinci SA faces allegations it’s partly to blame for the degradation of the armor installed on New York City’s Kosciuszko Bridge to protect against terrorist attacks and accidents.

Hardwire LLC, a Baltimore company that bid unsuccessfully on the project, previously sued one of its former executives for allegedly stealing its proprietary technology for bridge armor so he could win the contract. On Tuesday, Hardwire sought permission to add two units of Vinci to the suit, which claims damages of more than $40 million.

The armor is “splitting, delaminating, and is in danger of falling off,” causing a “clear and present danger,” according to the proposed revised complaint filed in federal court in Maryland. The separation “leaves significant vulnerabilities for the bridge cable.”