An ongoing federal antitrust investigation into bid rigging and other criminal conduct in the aluminum structures industry has resulted in grand jury indictments of Contech Engineered Solutions LLC and a former executive for their alleged role in a decade-long bid-rigging effort to gain North Carolina Dept. of Transportation contracts.

The six-count indictment, filed in U.S. District Court in Raleigh on Oct. 23 claims that West Chester, Ohio-based Contech and former area vice president Brent Brewbaker conspired to rig bids for aluminum headwalls and other drainage structures used in a variety of NCDOT road and bridge projects between 2009 and 2018.