PHOENIX — A chocolate river sounds like a dream, until it blocks traffic.

A tanker truck carrying 40,000 pounds of 120-degree liquid chocolate rolled over on Interstate 40 near Flagstaff, creating the spill Monday, according to the Arizona Department of Public Safety.

The westbound lanes of I-40 near mile 211, east of Flagstaff, were closed from 9 a.m. to 1 p.m. for cleanup of the 3,500 gallons of chocolate.

DPS shared photos of crews pumping the pool of chocolate off the road.

There is a river of chocolate blocking/flowing in the westbound lanes of I-40 at milepost 211, east of Flagstaff. A tanker truck carrying 40-thousand gallons of liquid chocolate rolled over. This will be a sweet cleanup! pic.twitter.com/G03eVdNQZD — Dept. Public Safety (@Arizona_DPS) January 14, 2019

It is unclear what caused the tanker to roll over.

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