Nick Hytrek

SOUTH SIOUX CITY -- Portions of a major Dakota County highway interchange were shut down for four hours Monday after a truck rollover spilled diesel fuel and dry pesticide alongside a highway off ramp.

The flatbed truck carrying jet fuel and pesticides from Tekamah, Nebraska-based crop duster Nebraska-Iowa Helicopter overturned on the northbound U.S. 77 off ramp to westbound U.S. 20 at approximately 7:05 a.m., South Sioux City Fire Chief Doug Koopman.

Cleanup crews remain at the scene, and the ramp is expected to be closed until later this evening.

The truck rolled at least once and came to rest on its wheels. In the process, the truck's fuel tank ruptured, spilling diesel fuel. Several of the pesticide containers also broke open and scattered the powdered material in the g

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