TRAFFIC ALERT: Motorists northbound on Interstate 5 should be aware that traffic is currently moving slow, due to operations to remove a big rig following a traffic collision, just south of the O'Brien off-ramp (Shasta County) Always #KnowBeforeYouGo at https://t.co/PzZh7kOoRfhttps://t.co/hSze9KKOVG