Scheduled bridge openings could delay trains on the New Haven Line on Sunday, Metro-North warned.

The Devon Bridge between Milford and Stratford is scheduled to open at 11 a.m., noon, 1 p.m. and 1:30 p.m.

The Cos Cob Bridge in Greenwich is scheduled to open at 10:30 a.m., 1 p.m. and 5 p.m.

Each opening could cause delays of 20 to 25 minutes for trains during those time periods.

Metro-North said it will update commuters as needed.