Bridges & Structures

Tunnel Inspection

Regulation

• National Tunnel Inspection Standards (NTIS) (7/13/15)

Policy

• Specifications for the National Tunnel Inventory (.pdf) (June, 2015)
  • Inventory and Element Data Sheet (.pdf, 0.1 mb)
  • NTI XML Schema
  • Example XML (.xml)
• Tunnel Operations, Maintenance, Inspection, and Evaluation (TOMIE) Manual (.pdf) (July, 2015)

Guidance

• Use and Inspection of Adhesive Anchors in Federal-Aid Projects (T 5140.34) (.pdf) (01/16/2018)
• Inspection of Bridges and Tunnels on Transit Highway (08/23/2016)
• Inspection of Overhead Stainless Steel Structural Elements in Tunnels (02/04/2016)
• Guidance on Structures Subject to the National Tunnel Inspection Standards (NTIS) (10/27/15)

Information

• MAP-21 Fact Sheet: National Bridge and Tunnel Inventory and Inspection Standards (2012)

National Tunnel Inventory

• National Tunnel Inventory
• NTI Submittal File Check
• NTI Data Checks

Event Archive

• National Tunnel Inspection Standards (NTIS) Webinar Recording #1 07/14/2015
• National Tunnel Inspection Standards (NTIS) Webinar Recording #2 08/04/2015