Deep Tunnel Inspection

National Power Rodding Crews travelled 4.5 miles from access point to access point, 160 below ground in an 8-wheeled drive vehicle to record a digital video inspection of a 20-foot diameter tunnel in Wisconsin.

The job required National Power Rodding’s experience and expertise in performing inspections of large tunnels, with limited access and unknown environmental conditions.

The inspection was performed safely while maintaining communication with the crew members during the entire inspection.