All ramps connecting Interstate 5 to state Route 512 will close overnight Thursday while state Department of Transportation crews conduct surveys.
The closures will last from 10 p.m. Thursday to 5 a.m. Friday.
Workers will first close the ramps from northbound I-5 to SR 512 and the ramps from both directions of SR 512 to northbound I-5. When that segment of work is complete, they will reopen the ramps to and from northbound I-5 and close on-ramps from both directions of SR 512 to southbound I-5.
Detours will be in place.