Brisiel got a five-year contract worth almost $20 million and Bartell got a one-year deal worth up to $3 million with incentives, according to a person familiar with the deals who spoke on condition of anonymity because the team did not release terms.
The signings came hours after the Raiders released their seventh player and fifth starter of the offseason, letting go of linebacker Kamerion Wimbley.
The additions of Brisiel and Bartell help fill the voids created by some of the recent cuts. Brisiel will likely replace longtime starter Cooper Carlisle at right guard. Carlisle, the starter the past five seasons, was released earlier this week.