Missouri Bridge Maintenance Inspector
Exam Practice Questions And Correct
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1. A bridge maintenance inspector is evaluating a reinforced concrete
deck exhibiting surface scaling and shallow spalling. Which of the
following is the most likely primary cause of this deterioration in a cold
climate region?
A. Alkali-silica reaction
B. Sulfate attack from groundwater
C. Freeze-thaw cycles combined with deicing salts
D. Freeze-thaw cycles combined with deicing salts
The combination of freeze-thaw action and deicing salts accelerates
surface scaling and spalling by allowing water and chlorides to
penetrate and expand within the concrete matrix.
,2. During inspection of a steel girder bridge, rust is observed along
connections and flange edges. What classification best describes this
type of corrosion?
A. Galvanic corrosion
B. Uniform corrosion
C. Stress corrosion cracking
D. Crevice corrosion
Uniform corrosion is characterized by a relatively even material loss
across exposed steel surfaces, commonly seen in weathered
structural components.
3. Which inspection frequency is generally required for routine
bridge inspections under national standards?
A. Every 6 months
B. Every 24 months
C. Every 5 years
D. Every 10 years
Routine bridge inspections are typically mandated every 24 months
to ensure ongoing structural safety and maintenance needs are
addressed.
4. What is the primary purpose of using a sounding hammer during
bridge deck inspection?
A. Measure load capacity
B. Determine steel composition
, C. Detect delaminations or voids
D. Measure deflection
Sounding with a hammer helps identify hollow or delaminated areas
in concrete by differences in sound response.
5. When inspecting bridge bearings, excessive rust and restricted
movement are observed. What is the most likely consequence?
A. Increased tensile strength
B. Reduced traffic load
C. Induced stresses in superstructure
D. Improved load distribution
Restricted bearing movement prevents thermal expansion and
contraction, causing stress buildup in the structure.
6. Which defect in timber bridge components is most critical for
loadbearing capacity?
A. Surface discoloration
B. Rot or decay
C. Minor cracks
D. Paint peeling
Decay significantly reduces the structural integrity of timber members
and compromises load-bearing capacity.
7. What is the purpose of applying protective coatings to steel
bridges?
A. Improve flexibility
B. Prevent corrosion
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A bridge maintenance inspector is evaluating a reinforced concrete
deck exhibiting surface scaling and shallow spalling. Which of the
following is the most likely primary cause of this deterioration in a cold
climate region?
A. Alkali-silica reaction
B. Sulfate attack from groundwater
C. Freeze-thaw cycles combined with deicing salts
D. Freeze-thaw cycles combined with deicing salts
The combination of freeze-thaw action and deicing salts accelerates
surface scaling and spalling by allowing water and chlorides to
penetrate and expand within the concrete matrix.
,2. During inspection of a steel girder bridge, rust is observed along
connections and flange edges. What classification best describes this
type of corrosion?
A. Galvanic corrosion
B. Uniform corrosion
C. Stress corrosion cracking
D. Crevice corrosion
Uniform corrosion is characterized by a relatively even material loss
across exposed steel surfaces, commonly seen in weathered
structural components.
3. Which inspection frequency is generally required for routine
bridge inspections under national standards?
A. Every 6 months
B. Every 24 months
C. Every 5 years
D. Every 10 years
Routine bridge inspections are typically mandated every 24 months
to ensure ongoing structural safety and maintenance needs are
addressed.
4. What is the primary purpose of using a sounding hammer during
bridge deck inspection?
A. Measure load capacity
B. Determine steel composition
, C. Detect delaminations or voids
D. Measure deflection
Sounding with a hammer helps identify hollow or delaminated areas
in concrete by differences in sound response.
5. When inspecting bridge bearings, excessive rust and restricted
movement are observed. What is the most likely consequence?
A. Increased tensile strength
B. Reduced traffic load
C. Induced stresses in superstructure
D. Improved load distribution
Restricted bearing movement prevents thermal expansion and
contraction, causing stress buildup in the structure.
6. Which defect in timber bridge components is most critical for
loadbearing capacity?
A. Surface discoloration
B. Rot or decay
C. Minor cracks
D. Paint peeling
Decay significantly reduces the structural integrity of timber members
and compromises load-bearing capacity.
7. What is the purpose of applying protective coatings to steel
bridges?
A. Improve flexibility
B. Prevent corrosion
