All lanes of southbound Interstate 5 in Tukwila were blocked after a semi-truck collision Monday, according to WSDOT.
The scene was south of Martin Luther King Jr. Way.
According to the Washington State Patrol, there were no injuries.
By 1 p.m., crews were able to open the right shoulder to help alleviate the backup.
By 3 p.m., the roadway was cleared to traffic.