The southbound Interstate 5 express lanes have reopened on the Ship Canal Bridge in Seattle after a multivehicle collision Wednesday morning, according to the Washington State Department of Transportation and Washington State Patrol.

Drivers should expect delays on southbound I-5 as light backups linger on both the express lanes and the southbound I-5 mainline lanes, the department said.

At about 9:20 a.m., there was a 4-mile-long backup, WSDOT said.