SEATTLE - Both directions of Interstate 5 have reopened after a crash shut down all lanes through Seattle for eight hours Monday.

Express lanes will remain closed until all resources are clear.

The collision happened around 10:30 a.m. on the southbound collector-distributor lanes of I-5. Firefighters and aid crews transported three people to the hospital. They reportedly suffered non-life-threatening injuries.

WSDOT says the tanker is carrying liquid petroleum gas, which is highly flammable. As a precaution, Seattle police and Washington State Patrol crews were evacuating homeless encampments under I-5 in the area, extinguishing campfires.

Traffic was backed up considerably in both directions of I-5 and even affected traffic on the West Seattle bridge and I-90.

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Drivers weren't the only ones affected by the tanker crash. Officials also evacuated a homeless camp near the site of the tanker crash. Authorities were concerned the tanker could start leaking, so they spread the word to people at the encampment.