The Dakota County Sheriff, Chris Kleinberg says a semi was pulling a tank loaded with 6,100 pounds of milk when it went off the road on a curve about 5:15 p.m. Wednesday evening.
It rolled and struck a tree before entering into the other side of a creek embankment.
The driver, 31-year-old Jose Rodriguez of Le Mars, Iowa, was thrown from the cab and taken to Mercy Medical Center but deputies say his injuries were not life-threatening.
A passenger in the cab, who was also Rodriguez's wife, was taken to Mercy with non-life threatening injuries.
Authorities say the truck was going too fast to make the curve.
Crews waited until Thursday morning to clean up the wreck and the milk, saying it would be safer to do so in the daylight.
Kleinberg says diesel fuel, antifreeze, and foam from the tanker did spill into the creek.
He says the Nebraska Department of Environmental Quality has been contacted and the spill was contained to a small area of the creek.
2929 Signal Hill Drive Sioux City, IA 51108
Switchboard: 712-239-4100 or 800-234-KTIV(5848)
News: (712) 226-5480
Fax: (712) 239-3025
News Tips: email@example.com