The slip-out is located at post mile 4.80, just west of Green Gulch Farm, and has reduced the highway to one lane in that area, officials said. Southbound traffic yields to northbound traffic in that location, officials said.
A pilot car will be in place to guide traffic while drilling crews take soil samples from the site to design permanent reparations. Drilling crews will begin work Friday at 11 a.m. until 5 p.m. Crews are expected to be on site for about five days, officials said.
The restricted access could cause some delays and commuters are advised to allow for extra time.