NHI Safety Inspection of In-Service
Bridges Exam ACTUAL EXAM
2026/2027 | Final Exam | Verified Q&A |
Pass Guaranteed - A+ Graded
SECTION 1: NBIS REGULATIONS & INSPECTOR QUALIFICATIONS (Questions 1–15)
Q1: Under 23 CFR 650 Subpart C, what is the maximum routine inspection interval for most highway
bridges?
A. 12 months (required only for FCM, scour-critical, or special cases)
B. 24 months (standard routine inspection interval) [CORRECT]
C. 36 months (extended interval for bridges in excellent condition)
D. 48 months (not permitted under current NBIS)
Correct Answer: B
Rationale: NBIS mandates a routine inspection frequency not to exceed 24 months for most bridges.
This interval ensures deterioration is caught before it becomes critical. Option A (12 months) applies to
fracture-critical members, scour-critical bridges, and bridges with specific deficiencies. Options C and D
exceed regulatory maximums and are not permitted under 23 CFR 650.313.
Q2: Which NHI training course is the core prerequisite for becoming a Bridge Inspection Team Leader?
A. NHI 130054 (Bridge Maintenance)
B. NHI 130055 (Safety Inspection of In-Service Bridges) [CORRECT]
C. NHI 130056 (Fracture-Critical Inspection Techniques for Steel Bridges)
D. NHI 130078 (Stream Stability and Scour at Highway Bridges)
Correct Answer: B
Rationale: NHI 130055 is the foundational course required for all bridge inspection team leaders per
FHWA guidelines. It covers NBIS requirements, condition rating, and inspection techniques. NHI 130056
,(C) is a specialized course for FCM inspection, and 130078 (D) covers scour assessment—neither
substitutes for the core 130055 requirement.
Q3: A bridge inspector has not attended a refresher course in 5 years. According to NBIS, what is the
status of their inspection qualifications?
A. Fully qualified indefinitely after initial certification
B. Qualified for 3 years, then requires refresher training [CORRECT]
C. Qualified for 5 years, then requires full recertification
D. Disqualified immediately after 24 months without refresher
Correct Answer: B
Rationale: NBIS and FHWA guidance require bridge inspectors to complete refresher training every 3
years (36 months) to maintain qualifications. After 5 years without refresher, the inspector is no longer
qualified to lead or participate in NBIS inspections. Option A is incorrect because qualifications expire; C
extends the interval beyond requirements; D is overly punitive (disqualification occurs at 3 years, not 24
months).
Q4: Under NBIS, which individual is responsible for ensuring bridge inspection reports are complete,
accurate, and submitted within the required timeframe?
A. The state DOT secretary
B. The Program Manager (responsible for overall bridge inspection program quality) [CORRECT]
C. The individual inspector only
D. The FHWA division administrator
Correct Answer: B
Rationale: The Program Manager oversees the entire bridge inspection program, including report
quality, timeliness, and compliance with NBIS. While individual inspectors (C) collect data, the Program
Manager bears ultimate responsibility. The state DOT secretary (A) and FHWA administrator (D) are too
far removed from day-to-day inspection operations.
Q5: A bridge with a calculated scour condition rating of 4 (Poor) was last inspected 18 months ago. What
is the required inspection frequency?
A. 24 months (standard routine interval)
B. 12 months (scour-critical or poor scour condition requires annual inspection) [CORRECT]
C. 6 months (only for bridges with imminent failure risk)
,D. 48 months (extended interval for low-traffic bridges)
Correct Answer: B
Rationale: Bridges with scour condition ratings of 4 or less (Poor or worse) are considered scour-critical
and require inspection at intervals not exceeding 12 months per 23 CFR 650.313. This ensures
monitoring of active scour conditions that could undermine substructure stability. Option A is
insufficient; C applies only to emergency conditions; D violates NBIS.
Q6: Which of the following is NOT a required component of a bridge inspection team?
A. At least one Team Leader who meets NHI training requirements
B. A Program Manager present at every inspection
C. Appropriate equipment for access and measurement
D. Documentation materials for field notes and photographs
Correct Answer: B
Rationale: The Program Manager manages the overall program but is not required to be physically
present at every individual bridge inspection. Team Leaders (A), proper equipment (C), and
documentation materials (D) are all essential field requirements. This is a common distractor confusing
program management with field operations.
Q7: Under NBIS, how soon must a critical finding (such as a section loss exceeding allowable limits or
imminent failure condition) be reported to the bridge owner?
A. Within 90 days of discovery
B. Within 45 days of discovery [CORRECT]
C. Within 30 days of the routine inspection due date
D. Within 1 year of the inspection cycle
Correct Answer: B
Rationale: NBIS requires critical findings to be reported to the bridge owner within 45 days. This
timeframe ensures prompt action for public safety. Delays beyond 45 days violate federal regulations
and may expose agencies to liability. Options A, C, and D all exceed the mandated reporting window.
Q8: Which federal regulation establishes the National Bridge Inspection Standards?
A. 23 CFR 650 Subpart A (Location and Hydraulic Design of Bridges)
B. 23 CFR 650 Subpart C (National Bridge Inspection Standards) [CORRECT]
, C. 23 CFR 655 Subpart F (Traffic Control Devices)
D. 49 CFR 570 (Vehicle Inspection)
Correct Answer: B
Rationale: 23 CFR 650 Subpart C is the specific Code of Federal Regulations establishing NBIS
requirements for inspection frequency, qualifications, procedures, and reporting. Subpart A (A) covers
hydraulic design; 23 CFR 655 (C) addresses traffic control; 49 CFR 570 (D) governs vehicle safety
inspections.
Q9: A bridge inspector discovers a crack in a main load-carrying member that appears to be propagating.
According to NBIS, what is the minimum required action?
A. Note it in the next scheduled routine inspection report
B. Report as a critical finding within 45 days and recommend interim monitoring or restrictions
[CORRECT]
C. Wait for the next underwater inspection cycle
D. Document only if the crack exceeds 1/4 inch width
Correct Answer: B
Rationale: Propagating cracks in primary members represent potential structural failure and must be
reported as critical findings within 45 days. Interim measures (load restrictions, increased monitoring)
may be necessary before the next routine inspection. Waiting (A, C) or applying arbitrary width
thresholds (D) violates safety protocols.
Q10: What is the minimum qualification for a Bridge Inspection Team Leader under NBIS?
A. High school diploma and 1 year of construction experience
B. NHI 130055 completion and relevant bridge inspection experience [CORRECT]
C. Professional Engineer license only (no inspection training required)
D. OSHA 30-hour certification only
Correct Answer: B
Rationale: NBIS requires Team Leaders to complete NHI 130055 (or equivalent state-approved training)
and possess relevant bridge inspection experience. A PE license (C) alone does not satisfy inspection-
specific training requirements. OSHA certification (D) addresses safety but not inspection competency.
Q11: Which bridges are exempt from NBIS inspection requirements?
Bridges Exam ACTUAL EXAM
2026/2027 | Final Exam | Verified Q&A |
Pass Guaranteed - A+ Graded
SECTION 1: NBIS REGULATIONS & INSPECTOR QUALIFICATIONS (Questions 1–15)
Q1: Under 23 CFR 650 Subpart C, what is the maximum routine inspection interval for most highway
bridges?
A. 12 months (required only for FCM, scour-critical, or special cases)
B. 24 months (standard routine inspection interval) [CORRECT]
C. 36 months (extended interval for bridges in excellent condition)
D. 48 months (not permitted under current NBIS)
Correct Answer: B
Rationale: NBIS mandates a routine inspection frequency not to exceed 24 months for most bridges.
This interval ensures deterioration is caught before it becomes critical. Option A (12 months) applies to
fracture-critical members, scour-critical bridges, and bridges with specific deficiencies. Options C and D
exceed regulatory maximums and are not permitted under 23 CFR 650.313.
Q2: Which NHI training course is the core prerequisite for becoming a Bridge Inspection Team Leader?
A. NHI 130054 (Bridge Maintenance)
B. NHI 130055 (Safety Inspection of In-Service Bridges) [CORRECT]
C. NHI 130056 (Fracture-Critical Inspection Techniques for Steel Bridges)
D. NHI 130078 (Stream Stability and Scour at Highway Bridges)
Correct Answer: B
Rationale: NHI 130055 is the foundational course required for all bridge inspection team leaders per
FHWA guidelines. It covers NBIS requirements, condition rating, and inspection techniques. NHI 130056
,(C) is a specialized course for FCM inspection, and 130078 (D) covers scour assessment—neither
substitutes for the core 130055 requirement.
Q3: A bridge inspector has not attended a refresher course in 5 years. According to NBIS, what is the
status of their inspection qualifications?
A. Fully qualified indefinitely after initial certification
B. Qualified for 3 years, then requires refresher training [CORRECT]
C. Qualified for 5 years, then requires full recertification
D. Disqualified immediately after 24 months without refresher
Correct Answer: B
Rationale: NBIS and FHWA guidance require bridge inspectors to complete refresher training every 3
years (36 months) to maintain qualifications. After 5 years without refresher, the inspector is no longer
qualified to lead or participate in NBIS inspections. Option A is incorrect because qualifications expire; C
extends the interval beyond requirements; D is overly punitive (disqualification occurs at 3 years, not 24
months).
Q4: Under NBIS, which individual is responsible for ensuring bridge inspection reports are complete,
accurate, and submitted within the required timeframe?
A. The state DOT secretary
B. The Program Manager (responsible for overall bridge inspection program quality) [CORRECT]
C. The individual inspector only
D. The FHWA division administrator
Correct Answer: B
Rationale: The Program Manager oversees the entire bridge inspection program, including report
quality, timeliness, and compliance with NBIS. While individual inspectors (C) collect data, the Program
Manager bears ultimate responsibility. The state DOT secretary (A) and FHWA administrator (D) are too
far removed from day-to-day inspection operations.
Q5: A bridge with a calculated scour condition rating of 4 (Poor) was last inspected 18 months ago. What
is the required inspection frequency?
A. 24 months (standard routine interval)
B. 12 months (scour-critical or poor scour condition requires annual inspection) [CORRECT]
C. 6 months (only for bridges with imminent failure risk)
,D. 48 months (extended interval for low-traffic bridges)
Correct Answer: B
Rationale: Bridges with scour condition ratings of 4 or less (Poor or worse) are considered scour-critical
and require inspection at intervals not exceeding 12 months per 23 CFR 650.313. This ensures
monitoring of active scour conditions that could undermine substructure stability. Option A is
insufficient; C applies only to emergency conditions; D violates NBIS.
Q6: Which of the following is NOT a required component of a bridge inspection team?
A. At least one Team Leader who meets NHI training requirements
B. A Program Manager present at every inspection
C. Appropriate equipment for access and measurement
D. Documentation materials for field notes and photographs
Correct Answer: B
Rationale: The Program Manager manages the overall program but is not required to be physically
present at every individual bridge inspection. Team Leaders (A), proper equipment (C), and
documentation materials (D) are all essential field requirements. This is a common distractor confusing
program management with field operations.
Q7: Under NBIS, how soon must a critical finding (such as a section loss exceeding allowable limits or
imminent failure condition) be reported to the bridge owner?
A. Within 90 days of discovery
B. Within 45 days of discovery [CORRECT]
C. Within 30 days of the routine inspection due date
D. Within 1 year of the inspection cycle
Correct Answer: B
Rationale: NBIS requires critical findings to be reported to the bridge owner within 45 days. This
timeframe ensures prompt action for public safety. Delays beyond 45 days violate federal regulations
and may expose agencies to liability. Options A, C, and D all exceed the mandated reporting window.
Q8: Which federal regulation establishes the National Bridge Inspection Standards?
A. 23 CFR 650 Subpart A (Location and Hydraulic Design of Bridges)
B. 23 CFR 650 Subpart C (National Bridge Inspection Standards) [CORRECT]
, C. 23 CFR 655 Subpart F (Traffic Control Devices)
D. 49 CFR 570 (Vehicle Inspection)
Correct Answer: B
Rationale: 23 CFR 650 Subpart C is the specific Code of Federal Regulations establishing NBIS
requirements for inspection frequency, qualifications, procedures, and reporting. Subpart A (A) covers
hydraulic design; 23 CFR 655 (C) addresses traffic control; 49 CFR 570 (D) governs vehicle safety
inspections.
Q9: A bridge inspector discovers a crack in a main load-carrying member that appears to be propagating.
According to NBIS, what is the minimum required action?
A. Note it in the next scheduled routine inspection report
B. Report as a critical finding within 45 days and recommend interim monitoring or restrictions
[CORRECT]
C. Wait for the next underwater inspection cycle
D. Document only if the crack exceeds 1/4 inch width
Correct Answer: B
Rationale: Propagating cracks in primary members represent potential structural failure and must be
reported as critical findings within 45 days. Interim measures (load restrictions, increased monitoring)
may be necessary before the next routine inspection. Waiting (A, C) or applying arbitrary width
thresholds (D) violates safety protocols.
Q10: What is the minimum qualification for a Bridge Inspection Team Leader under NBIS?
A. High school diploma and 1 year of construction experience
B. NHI 130055 completion and relevant bridge inspection experience [CORRECT]
C. Professional Engineer license only (no inspection training required)
D. OSHA 30-hour certification only
Correct Answer: B
Rationale: NBIS requires Team Leaders to complete NHI 130055 (or equivalent state-approved training)
and possess relevant bridge inspection experience. A PE license (C) alone does not satisfy inspection-
specific training requirements. OSHA certification (D) addresses safety but not inspection competency.
Q11: Which bridges are exempt from NBIS inspection requirements?
