Tunnel Library
Safety Inspections
- National Tunnel Inspection Standard (NTIS)
- FHWA Technical Advisory TA5140.30: Use and Inspection of Adhesive Anchors in Federal-Aid Projects
- FHWA Tunnel Inspection/
Fire and Life Safety
- Design Fires in Road Tunnels (.pdf)
- Recommended AASHTO Guidelines for Emergency Ventilation Smoke Control in Roadway tunnels
- Global Benchmarking Study - Fixed Firefighting Systems in Highway Tunnels (.pdf, 7mb)
- Fixed Fire Fighting and Emergency Ventilation Systems for Highway Tunnels – Literature Survey and Synthesis (.pdf)
- Fixed Fire Fighting and Emergency Ventilation Systems for Highway Tunnels–Workshop Report (.pdf)
- Fixed Fire Fighting and Emergency Ventilation Systems for Highway Tunnels – Computer Modeling Report (.pdf) (Archived)
- Fixed Fire Fighting and Emergency Ventilation Systems for Highway Tunnels – Laboratory Testing Report (.pdf)
- Fixed Fire Fighting and Emergency Ventilation Systems for Highway Tunnels – Research Report (.pdf)
Tunnel Liners
- Precast Concrete Segmental Liners for Large Diameter Road Tunnels -- Literature Survey and Synthesis, FHWA-HIF-20-035 (.pdf, 4mb)
- Precast Concrete Segmental Liners for Large Diameter Road Tunnels -- Workshop Report, FHWA-HIF-20-036 (.pdf, 2mb)
- Precast Concrete Segmental Liners for Large Diameter Road Tunnels -- Laboratory Testing, FHWA-HIF-24-003 (.pdf, 23mb)
Tunnel Manuals
- Technical Manual for Design and Construction of Road Tunnels - Civil Elements (.pdf, 29 mb)
- Tunnel Operations, Maintenance, Inspection, and Evaluation (TOMIE)