Inspection Vendor Index
Regulation update

What Code Edition Actually Governs Bridge Inspection Firms Right Now

FHWA's 2022 bridge inspection rule is the law in force, AASHTO's evaluation manuals are mid-interim, a federal data system just changed over, and personnel qualification codes moved editions in the last two years. Here is what is current, what shifted recently, and what to ask a firm before you sign.

By Inspection Vendor Index Editorial Team · Published 2026-07-11 · Updated 2026-07-11

Related category: Bridge Inspection Engineering Firms

The regulatory floor: FHWA's NBIS 2022 rule is already in force, and its transition deadlines have passed

The National Bridge Inspection Standards (NBIS), codified at 23 CFR Part 650 Subpart C, are the federal regulation every bridge inspection program in the country operates under. The current version is the final rule FHWA published in the Federal Register on May 6, 2022, with most provisions effective June 6, 2022. This is not a pending update, it is the rule in force today. The 2022 rule made three changes worth knowing when evaluating a firm. First, it requires each bridge owner (a State, Federal agency, or Tribal government) to maintain a registry of nationally certified bridge inspectors serving as team leaders, including qualification records and any adverse actions affecting an inspector's standing. Second, it replaced the flat 24-month inspection cycle with risk-based criteria that can extend routine inspection intervals to 48 months and underwater inspection intervals to 72 months, when an agency's own risk-based policy supports it. Third, it retired the term 'fracture critical member' in favor of 'nonredundant steel tension member' (NSTM), a terminology and scope change that flows through to training and NDT work. The transition period for this rule is already closed. Provisions under 650.309(a)(5), (b)(5), and (c)(3), covering qualification requirements for Program Managers, Team Leaders, and NSTM Team Leaders who held those positions before the 2022 rule, became effective June 6, 2024. FHWA reinforced this in a February 23, 2024 memorandum specifically on NSTM inspection training, confirming that team leaders performing NSTM inspections needed FHWA-approved training in place by that date. If a firm's marketing still only references 'fracture critical inspection' with no mention of NSTM terminology or the certified-inspector registry, that is a documentation gap worth asking about directly, separate from whether its inspectors are actually qualified.

The data layer is mid-transition: SNBI and FHWA's next-generation NBI system

Separate from the inspection rule itself, FHWA also published the Specifications for the National Bridge Inventory (SNBI) in March 2022, which replaced the 1995 Recording and Coding Guide and the 2014 bridge-elements specification. SNBI governs what data gets collected and reported to the National Bridge Inventory, and it is on its own compliance clock, distinct from the NBIS inspection-cycle rule. That clock is active right now. FHWA's next-generation National Bridge Inventory data system opened for SNBI data submittals on January 1, 2026. The first submittal carrying a transitioned or hybrid dataset came due March 15, 2026. Agencies do not have to submit a complete, fully populated, verified SNBI dataset with no temporary codes until March 15, 2028. What that means for procurement: a firm can be fully legal today while its field collection templates, tablet software, and reporting formats are still mid-crosswalk from the old Coding Guide to SNBI element definitions. That crosswalk work is a real operational cost for the firm right now, and it is reasonable to ask a bidder directly whether its data collection is already SNBI-native or still running parallel formats ahead of the 2028 deadline.

AASHTO's evaluation manuals: current editions are living documents, not fixed texts

Two AASHTO manuals sit underneath NBIS and SNBI as the technical references for how inspection findings get turned into load ratings and standardized condition data. The Manual for Bridge Evaluation (MBE) is in its 3rd Edition, base text 2018. AASHTO issued 2020 and 2022 interim revisions, and the current package is the 2024 Interim Revisions, which fold in ballot items approved at AASHTO's Committee on Bridges and Structures (COBS) annual meetings in 2022 and 2023, per AASHTO's own Journal coverage and store listing. The Manual for Bridge Element Inspection (MBEI) is in its 2nd Edition, published 2019. Its 2022 interim added visual condition-state guidance for timber and masonry elements and introduced a new prestressed concrete slab element definition, and AASHTO has since issued further interim revisions in 2024 and 2025, so the current MBEI package is the 2019 base text plus the 2022, 2024, and 2025 interims together. The practical point for a buyer is that neither manual is a single fixed document. AASHTO revises both through interim ballots on an ongoing basis rather than issuing a wholesale new edition every few years. A firm that cites 'MBE, 3rd Edition' or 'MBEI, 2nd Edition' without naming which interim-year package its raters and element inspectors are actually using has given you an incomplete answer. It is a fair, specific procurement question, not a gotcha.

Personnel qualification codes moved on their own schedules: NHI, ASNT, OSHA, and ADCI

The training and personnel-certification layer changed independently of the FHWA rule itself, and each code body is on its own cycle. NHI course numbers matter more than a firm simply saying 'our inspectors are NHI-certified.' NHI-130055 (Safety Inspection of In-Service Bridges) is the baseline comprehensive course, built on FHWA's Bridge Inspector's Reference Manual (BIRM), 2022 NBIS Version, and aligned to the 2022 NBIS rule and to SNBI. NHI-130078 (Bridge Inspection Techniques for Nonredundant Steel Tension Members) is the renamed successor to the old fracture-critical course, and it carries that June 6, 2024 training deadline described above; FHWA's memo clarified that inspectors who completed earlier versions of the course remain qualified and do not need to retake it, though FHWA funded seats at the updated version because of substantial new content. NHI-130091 (Underwater Bridge Inspection) is the required course for anyone newly qualifying as an Underwater Bridge Inspection Diver on or after June 6, 2022. For the NDT technicians who run magnetic particle, dye penetrant, and ultrasonic testing on steel bridge members (work that sits inside NSTM inspection scope), the governing document is ASNT's Recommended Practice SNT-TC-1A, which moved from its 2020 edition to a new 2024 edition released that year, with an addendum that took effect in May 2025. ASNT revises this practice roughly every five years, so the next scheduled edition is 2028. On general site safety, firms operate under OSHA's 29 CFR 1926 Subpart M (fall protection, 1926.501 through 1926.503) and Subpart AA (confined spaces in construction, 1926.1201 through 1926.1213) for enclosed structural spaces like box girders and pier caps. OSHA published a final rule in the Federal Register on December 12, 2024, clarifying that personal protective equipment, including fall-arrest harnesses, must properly fit each individual construction worker; that rule took effect January 13, 2025 and brought the construction standard in line with the fit requirement already in place for general industry. For firms that field their own commercial dive teams for underwater substructure inspection rather than subcontracting that scope, the operational reference is the Association of Diving Contractors International's (ADCI) International Consensus Standards for Commercial Diving and Underwater Operations, currently on its 6.5 edition per ADCI's own published standards page. ADCI's standard is not itself a government regulation. It operates alongside OSHA's commercial diving rules at 29 CFR 1910 Subpart T as the industry's working reference for dive team staffing and procedures.

What to actually ask a bidder before you sign

Given how many of these clocks run independently of one another, generic assurances ('we're fully certified and compliant') don't tell you much. A more useful procurement conversation asks for specifics on each layer: 1. Which team leaders and program managers hold current NBIS qualification, by course number and completion year rather than a general certification claim. 2. Confirmation that any inspector performing NSTM work cleared the June 6, 2024 training requirement, or holds a documented pre-2022 equivalency FHWA recognizes. 3. The interim-year edition of the MBE and MBEI the firm's raters and element inspectors are currently applying, in writing. 4. Whether the firm's field data collection is already built for SNBI, or still running a legacy Coding Guide crosswalk ahead of the March 2028 full-compliance deadline. 5. For any scope involving NDT on steel members, which SNT-TC-1A edition underlies the firm's written practice. 6. For underwater scopes, which ADCI edition the firm's diving operations manual cites, and current standing under OSHA's commercial diving rules. On cost, none of the sources reviewed here publish a rate card for what code-cycle compliance adds to a bid, and this article does not invent one. What can be said qualitatively is that retraining seats, updated reporting templates, and NDT requalification are real cost drivers behind any quote right now, because several of these codes changed editions within the last two years. A firm that answers all six questions above with specifics has generally already absorbed that cost as overhead. A firm that answers only in generalities may still be pricing the transition into whichever contract lands next, which is worth knowing before you're the one funding it.

Key takeaways

  • FHWA's National Bridge Inspection Standards (23 CFR 650 Subpart C) final rule took effect June 6, 2022, and its transition period is already closed. The June 6, 2024 deadline for existing team leaders and program managers to meet updated qualification and NSTM training requirements has passed, so any firm still citing pre-2022 language without updated credentials is behind, not early.
  • The data-reporting layer is separate from the inspection rule itself and is still mid-transition. FHWA's next-generation National Bridge Inventory system opened for Specifications for the National Bridge Inventory (SNBI) submittals on January 1, 2026, with a full, fully-populated SNBI dataset not required from agencies until March 15, 2028. A firm's field data workflow can be legally compliant today while still running a legacy crosswalk.
  • AASHTO's Manual for Bridge Evaluation (3rd Edition) and Manual for Bridge Element Inspection (2nd Edition) are both living documents updated through interim revisions rather than full new editions. A citation to '3rd Edition' or '2nd Edition' with no interim year attached is an incomplete answer, ask which interim package the firm's raters are actually applying.
  • Personnel-qualification codes changed editions recently and independently of the FHWA rule: ASNT's SNT-TC-1A moved to its 2024 edition (with a 2025 addendum) for NDT technician qualification, OSHA finalized a PPE proper-fit rule for construction effective January 13, 2025, and the ADCI consensus standard for commercial diving is now on its 6.5 edition. None of these move on the same clock as NBIS, so a firm can be current on one and stale on another.
  • Cost on a bridge inspection quote is driven by how much of this code churn a firm has already absorbed versus how much it still has to pass through: retraining seats, updated reporting templates, and NDT requalification are the real levers, not a single published rate.

FAQ

Is the FHWA National Bridge Inspection Standards rule from 2022 still the current one, or has it been replaced?

It is still current. The final rule published in the Federal Register on May 6, 2022 (23 CFR 650 Subpart C) took effect June 6, 2022, and remains the governing federal regulation for bridge inspection today. Its own internal transition deadlines, including the June 6, 2024 date for updated team leader and NSTM training, have already passed, which means firms should be fully through that transition, not still working toward it.

What's the difference between NBIS and SNBI, since both come from FHWA?

NBIS (23 CFR 650 Subpart C) is the regulatory framework: who is qualified to inspect, how often bridges must be inspected, and what qualifies as compliance. SNBI (Specifications for the National Bridge Inventory) is the technical data-coding specification for what condition and element data gets reported into the National Bridge Inventory. Both originated from FHWA's 2022 rulemaking, but they run on separate compliance clocks, SNBI's full-dataset deadline is March 15, 2028, well past the NBIS transition dates.

Does every interim revision to an AASHTO manual mean a firm has to get re-certified?

No. Interim revisions update or clarify the technical content of an existing manual edition, they are not a new personnel certification cycle. A firm doesn't need new credentials every time AASHTO's committee approves an interim ballot. What it should do is apply the current interim-updated manual in its actual load rating and element inspection work, which is why asking which interim-year package a firm cites is a meaningful procurement question even though it isn't a certification issue.

Editorial process Compiled from primary standards, codes, and regulatory sources, then adversarially fact-checked against those sources. Not written or reviewed by a licensed engineer or safety professional. Procurement education, not safety or legal advice.

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