Residents heading back home into Half Moon Bay on Highway 92 from I-280 can expect a slow drive.
There are approximately 15 gravel trucks slowly moving up the hill into Half Moon Bay, stalling traffic behind them.
A stalled suburban intially caused the traffic, according to one commuter. Officials moved the suburban around 2:45 p.m., but traffic had already started.
There is no accident in sight.
The California Highway Patrol has no additional information. 5-1-1 and Caltrans are not providing any details into the back-up.
Patch will update the story as more details come in.