OMB control number

National Tunnel Inspection Standards

OMB 2125-0640 · DOT/FHWA.

OMB 2125-0640

The National Transportation Safety Board (NTSB) had previously suggested that the FHWA seek legislative authority to establish a mandatory tunnel inspection program similar to the National Bridge Inspections Standards (NBIS) that would identify critical inspection elements and specify an appropriate inspection frequency. Additionally, the DOT Inspector General (IG), in testimony before Congress in October 2007, highlighted the need for a tunnel inspection and reporting system to ensure the safety of the Nation's tunnels, stating that the FHWA

The latest form for National Tunnel Inspection Standards expires 2027-07-31 and can be found here.

Latest Forms, Documents, and Supporting Material

Document Name
Form FHWA-NTI-1 Initial, Routine, Damage, In-Depth, and Special Inspections for Highway Tunnels Form
Supporting Statement A- NTI 2024.docx Supporting Statement A
30Day FRN.pdf Supplementary Document
60Day FRN.pdf Supplementary Document
23 CFR Part 650 Subpart E (up to date as of 1-31-2024).pdf Supplementary Document
Critical Findings on Highway Tunnels
Initial, Routine, Damage, In-Depth, and Special Inspections for Highway Tunnels Form
Follow up on Critical Findings
Routine Inspection Reporting
Preliminary National Tunnel Inventory

All Historical Document Collections

202402-2125-003 Approved with change	New collection (Request for a new OMB Control Number)	2024-04-25
201305-2125-001 Comment filed on proposed rule	New collection (Request for a new OMB Control Number)	2013-11-07

OMB Details

Preliminary National Tunnel Inventory

Federal Enterprise Architecture: Transportation - Ground Transportation