The RV wastewater dump at the northbound Gee Creek Rest Area will be closed most of today.
According to the Washington State Department of Transportation, the closure will last until about 4:15 p.m. The closure was prompted by some maintenance issues.
The dump station is popular with recreational vehicle users.
The rest area remains open.
Gee Creek Rest Area is at Milepost 11 of Interstate 5, near the Battle Ground exit.