Drivers heading south on Interstate 5 near Mounts Road SW in DuPont should expect to encounter lane and ramp closures Thursday night.

The closures come as crews attempt to repair the bridge damaged in Monday's Amtrak derailment.

Starting at 8 p.m. Thursday, Dec. 21, the right lane of the southbound I-5 near Mounts Road will close until 7 a.m. Friday, Dec. 22. The Mounts Road on-ramp to southbound I-5 will also close during the same hours.

The two left lanes of southbound I-5 will remain open during the work. Drivers are encouraged to plan for extra travel time.

Additional overnight closures will be announced once they are scheduled, after Dec. 25.

Related: Check Traffic Drive Times