NEC User
Senior Member
- Location
- Marlboro, NJ, USA
NEC requires bonding and interconnection of all metal parts that are likely to be energized. Is bonding and grounding of a large structure like a 2400 foot bridge with a metal main span truss required by NEC? I'm working on a lighting design for an existing bridge. I'm not positive if the existing bridge is grounded, likely it is though right? I am considering recommending a bridge grounding plan, not just for the main span truss area, but for one side of the bridge to the opposite side. Any thoughts?