Posted March 29, 2018 10:23AM PDTCaltrans says the highway will be closed to all vehicles starting Tuesday morning.
The closure is a result of an “unprecedented” number of snowmelt and flooding in the San Joaquin Valley.
According to Caltrans, the highway is “expected to be fully open by Wednesday afternoon.”
The agency says drivers will be detoured to other areas of the state to avoid the closure.
Traffic will be reduced to a few lanes in each direction on the highway, including through the area of the highway that will be used for public transit.
The highway is also closed to motor vehicles from the city of San Francisco, which is in the area.
Trailer and utility truckers are also restricted to only one lane, and people using bicycles are prohibited.
Caltrans will also limit traffic on Highway 55 in the southbound lanes from 6 a.m. to 5 p.m., and in the northbound lanes between 4 a. m. and 6 a: m.
The agency warns that drivers who do not have a valid vehicle insurance policy should not drive on the freeway.