[Update 9 a.m.]
The DOT said it has opened the shoulder lane to help alleviate traffic.
[Update 8:25 a.m.]
All westbound lanes of the H-1 in Pearl City have been reopened.
Several westbound lanes of the H-1 Freeway in Pearl City are blocked due to two separate vehicle accidents, according to Honolulu police.
It's not clear if there were any injuries as police have not released further details.
Traffic cameras are showing a major backup in the area.
Stay with Hawaii News Now for the latest on this traffic alert.