Standard for Road Tunnels, Bridges, and Other Limited Access Highways
What is NFPA 502?
This standard provides fire protection and fire life safety requirements for limited access highways, road tunnels, bridges, elevated highways, depressed highways, and roadways that are located beneath air-right structures.
Official document scope
What does NFPA 502 address?
Guidelines cover construction, operation, maintenance, and fire protection of road tunnels, bridges, and other limited access highways to mitigate hazards, maintain structural integrity, and protect lives. Other topics include standpipe and water supply, control of hazardous materials, emergency ventilation, electrical systems, and emergency response.