Update: All lanes were reopened as of 8 p.m. Sunday evening.

A two-car crash closed all northbound lanes and left nails scattered across the roadway of Interstate 405 in Southwest Portland just after 5:30 p.m. Sunday. As of 6:15 p.m., two left lanes had reopened, Oregon Department of Transportation spokesman Don Hamilton said.

One vehicle rolled over in the crash and travelers should expect slow-moving traffic, Hamilton said.

"As a result of this, there are some nails scattered across the road,” Hamilton said. “All through traffic should be routed through on I-5 northbound.”

Cleanup crews are working to clear the nails left in the road. The Southwest Fourth Avenue exit remains open, but traffic is jammed and drivers should avoid using I-405 northbound, he said.

“It’s just a nightmare right now -- there’s a lot of delays,” Hamilton said of the traffic.

Emergency vehicles are on the scene to respond to the crash, but no information about the condition of the people involved in the crash has been released.

-- Emily Goodykoontz; 503-221-6652; egoodykoontz@oregonian.com