Exclusive video from our sister station KABC in Los Angeles shows the truck perched precariously over the side of the freeway, one rear wheel dangling free.
Suddenly the road gives out and the fire engine tumbles over the side.
Firefighters had already evacuated the vehicle and no injuries were reported.
The incident happened in the No. 5 lane of the southbound 15, south of the 138, after 8 p.m.
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