"Anyone coming the other way would have got a hell of a fright to see a big truck stretched across the road."
By the time firefighters arrived, the driver had escaped from the vehicle, unhurt but "extremely sheepish".
"He was pretty disappointed in himself ... and his delivery had turned from bread into crumbs," Mr Robinson said.
"Aside from that, he was absolutely fine.
"He was very, very lucky."
The truck itself sustained only minor damage to the driver's side and was later towed from the scene.
Firecrews from Carterton and Masterton spent "about an hour" clearing the road of debris from the crash, and traffic was reduced to one lane until the truck was removed.
A police officer at the scene said no alcohol or drugs were involved in the crash.
A man is to appear in court on careless driving charges.