UPDATE (6:30 a.m.): All lanes of the 99 have been reopened. Lanes were closed due to construction.
Highway 99 is closed in both directions, according to the California Highway Patrol Incident Page.
The highway will be closed for an unknown amount of time, and traffic is currently being diverted to Highway 58 and Stockdale Highway off-ramps.
We will provide more updates as they become available.