OAKLAND -- Traffic into the Port of Oakland was delayed Wednesday afternoon after a big-rig carrying 22 tons of almonds tipped over while turning onto Seventh Street.

The mishap occurred about 12:42 p.m. in the westbound lanes of Seventh Street, just south of Frontage Road. The 43-year-old driver from Kerman, near Fresno, had just exited Interstate 880 and apparently turned onto westbound Seventh Street too quickly, police said.

The tractor trailer tipped onto the passenger side, with a portion of the trailer on the sidewalk. The driver got out on his own and was not injured, police said.

No almonds were spilled, but at least 25 gallons of diesel fuel had leaked from the truck and fire crews blocked storm drains to prevent it from getting into waterways.

Police estimated it would take several hours to upright the tractor trailer and clean up the spilled fuel. The two right lanes were blocked as of 1:30 p.m., but trucks were able to get by using two other lanes.