The truck overturned near Quenby Mtn. Road and Pequest Fish Hatchery during the afternoon on Wednesday, June 1, the Mountain Lake Fire Company said.
A photo from the scene shows a load of dirt or sand spilled over the roadway with several emergency vehicles.
The area between Quenby Mtn. Road and Pequest Fish Hatchery was closed for the crash investigation and cleanup until further notice, police said.
It was not immediately clear when the lanes would reopen.
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