MARIN COUNTY (CBS SF) — Roadway flooding blocked three lanes on southbound U.S. Highway 101 near the Marin City exit just north of Sausalito Wednesday morning, creating hours of backup for people trying to get into San Francisco for work.

PHOTOS: 101-S Marin City Flooding

The flooding was first reported at 3:22 a.m., initially blocking only one lane near the state Highway 1 connector ramp. A sig-alert was issued 4:18 a.m. signaling the flooding of three right-hand lanes.

KPIX 5 staffers reported more than two hours of delays in traffic trying to get around the two open lanes on the flooded roadway.

Josh Burns said he couldn’t get to his office along southbound 101 in Mill Valley and neither could his workers.

“Others in my office are delayed in getting into work today as well. It’s a good day to stay at home from work,” he said.

Brian Tyler wanted to get to Gilroy and left Willits before dawn.

“Everyone’s coping. Yeah, it’s moving along. I was getting kind of angry, but there’s nothing you can do about it so you just keep going,” he said.

From 8 a.m. through the commute, traffic maps show cars backing up all the way through San Rafael to the Highway 37 interchange in Novato.

Traffic had returned to normal by mid-afternoon, with average speeds through the area returning to 60 mile per hour range.

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