Logging Truck Crashes on Highway 299 Near Willow Creek

A logging truck traveling eastbound near mile marker 37 on Highway 299 overturned slightly after leaving the roadway for unknown reasons. According to CHP dispatchers the driver was uninjured.
LoCO reader Elizabeth Gerrity reports that traffic is flowing just fine for the moment. She also sends in the attached photos.
Updates below.
1:34
p.m.
[1] LOGGING TRUCK OFF RDWY
1:35
p.m.
[3] VISIBLE FROM RDWY
1:35
p.m.
[2] PER RP OCCUP IS OO VEH
1:36
p.m.
[7] [Appended, 13:37:11] [2] APRS NON INJ PER 16-S4
1:39
p.m.
[9] 37.75 MM RQ 1185 BIG RIG ROTATION FOR LOGGING TRUCK ON ITS SIDE IN THE DITCH
1:40
p.m.
[10] IT IS FULLY LOADED ON ITS SIDE PARTL 1125
1:41
p.m.
[11] [Rotation Request Comment] BUDDYS TOWING 530-629-2424 THEY HAD THE CALL FROM THE TRUCK CO AND WILL RECALL WITH AN ETA WHEN AVAL
2
p.m.
[12] 16-S4 RDWY CLR BUDDYS 97
2:38
p.m.
[16] 1039 HSO
2:43
p.m.
[17] [Notification] [CHP]-Problem changed from 1183-Trfc Collision-Unkn Inj to 1182-Trfc Collision-No Inj by CHP [Shared]
3:21
p.m.
[19] B16-071 EB LNS TEMP CLOSED FOR VEH RECOVERY
4:31
p.m.
[20] RDWY CLR
See: Common CHP Codes and Shorthand