A crew from Direct Line Communications was attempting to set a cement box into a hole when a support leg for the truck sunk into the grass and the large utility vehicle tipped precariously on its side.
The only injury was to a crew member who fell into the hole after the fact. He suffered a minor leg injury and sought his own treatment.
Employees from Dick's Towing responded to the scene at the corner of northbound Beacon Boulevard and Madison Street shortly before 1 p.m.
They stabilized the vehicle using two of their big rigs, then slowly uprighted the tipped truck.
Field supervisor Kevin Forrister said no more work would be done that day. The company planned to bring in a larger truck to handle the weight of the box.
The hole would be barricaded, he said.
Forrister said his company, from Mishawaka, Ind., was working for AT&T.
He said the cement box in the hole would have to be removed and replaced.