Final answer:
The question seems to be about an event not present in the provided excerpt from "An Occurrence at Owl Creek Bridge." There is no mention of J.J. McCracken or bulldozers in this part of the story.
Step-by-step explanation:
The text you provided appears to be from Ambrose Bierce's short story "An Occurrence at Owl Creek Bridge." The excerpt does not mention the character J.J. McCracken or any situation regarding bulldozers and wiring. Instead, it discusses a man (Peyton Farquhar) asking about the distance to the Owl Creek bridge and receiving information about the Yankee soldiers and their activities there. The passage ends with a description of Farquhar experiencing a dream-like state where he imagines his escape from being hanged.