BATON ROUGE, La. (AP) — CB&I has completed its acquisition of The Shaw Group Inc. a move that means Baton Rouge will no longer be headquarters for a Fortune 500 company.

CB&I and Shaw shareholders overwhelmingly approved the $3 billion deal in December.

The Advocate reports (http://bit.ly/Ydr8J1 ) CB&I will operate Shaw as a separate business unit under the name CB&I Shaw. Headquarters functions at the company's Baton Rouge offices have shifted to The Woodlands, Texas, where CB&I is based.

CB&I engineers and builds some of the world's largest infrastructure projects. CB&I has around 23,000 employees worldwide. Shaw is an engineering, construction and fabrication company with about 27,000 workers worldwide. Of those, 4,000 are in Louisiana, with around 1,000 in Baton Rouge.