WAKEFIELD (CBS) — A truck fire on Route 128 in Wakefield created significant traffic problems for the Thursday evening commute.

State police said a truck carrying liquid oxygen and liquid nitrogen somehow caught fire at 4:17 p.m. while traveling southbound. Both northbound and southbound lanes were shut down because of the risk, police said.

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All lanes were reopened after about 40 minutes, but the delays were expected to continue, police said.

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A minor crash in Harvard caused a backup on Route 2 westbound. Delays were also expected from Insterstate 495 southbound to Route 2 westbound in Littleton after another minor crash.

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