CalTrans has closed northbound traffic on Interstate 5 near Shasta Lake as a semi-truck crashed off the ending of the Antlers Bridge. While they announced that there are multiple big rig collisions, the status of the other truck(s) is unknown.
ALERT: NB I-5 is currently closed at Fawndale Road due to multiple multiple big rig collision at Antlers Bridge. No ETO at this time. Motorists advised to choose alternate routes. WILL UPDATE— Caltrans District 2 (@CaltransD2) March 15, 2020
While looking at the CalTrans webcam, you can see the scary scene of the semi crash off Antlers Bridge:
There is no timetable for the reopening. Add this to the list of road closures in Northern California due to snowy conditions.