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National Highway Institute (NHI) Safety Inspection of In-Service Bridges Final Assessment Practice Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
What is a unique feature of curved bridges?
Choose one answer below.
A
They always use simple spans.
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B
They can effectively utilize steel box-girders.
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C
They do not require any support systems.
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D
They are commonly constructed using materials other than steel.
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QUESTION 2 / 25
What material is commonly used in slope protection methods?
Choose one answer below.
A
Sandbags
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B
Geotextiles and riprap
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C
Wooden logs
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D
Concrete blocks
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QUESTION 3 / 25
Which devices are used to protect bridges from vessel impact?
Choose one answer below.
A
Street lamps and barriers
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B
Reinforced girders and beams
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C
Dolphins, fenders, and shear fences
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D
Piers and abutments
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QUESTION 4 / 25
Which testing method uses AC current to detect small surface flaws?
Choose one answer below.
A
Magnetic particle testing
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B
Eddy current testing
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C
Radiography testing
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D
Ultrasonic testing
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QUESTION 5 / 25
Which method is specifically used for flaw detection in concrete?
Choose one answer below.
A
Moisture Meter
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B
Impact Echo Test
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C
Spectral Analysis
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D
Vibration Testing
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QUESTION 6 / 25
Which type of guardrail end is specifically designed to reduce the barrier's threat as a roadside object?
Choose one answer below.
A
Flared
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B
Shaped
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C
Breakaway
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D
Shader
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QUESTION 7 / 25
What does a footing apron consist of?
Choose one answer below.
A
Vegetation roots and soil
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B
Protective layers surrounding the footing
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C
Concrete base and drainage pipes
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D
Steel girders and beams
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QUESTION 8 / 25
Which test is considered most effective for detecting subsurface deficiencies?
Choose one answer below.
A
Dye penetrant testing
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B
Radiography
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C
Magnetic particle testing
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D
Acoustic emission
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QUESTION 9 / 25
Which of the following methods is not effective for inspecting large areas of concrete?
Choose one answer below.
A
Ground Penetrating Radar
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B
Impact Echo Test
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C
Acoustic Wave Testing
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D
Vibration Testing
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QUESTION 10 / 25
What type of bearings are popular for new construction due to their deformation properties?
Choose one answer below.
A
Steel bearings
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B
Circular bearings
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C
Elastomeric bearings
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D
Wooden bearings
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QUESTION 11 / 25
Where can you find the guidelines for railing design and testing?
Choose one answer below.
A
ANSI Standards for Safety
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B
Federal Highway Administration Manual
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C
AASHTO Guide Specifications for Bridge Railings
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D
American Concrete Institute Guidelines
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QUESTION 12 / 25
What phenomenon describes abrupt changes in stream elevation followed by upstream migration?
Choose one answer below.
A
Headset migration
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B
General scour
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C
Aggradation
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D
Streambank damage
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QUESTION 13 / 25
What is the main advantage of using disk bearings in bridge construction?
Choose one answer below.
A
High elasticity
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B
Very low profile
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C
Improved aesthetic integration
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D
High rotational capacity
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QUESTION 14 / 25
What is the maximum movement accommodated by a pourable joint seal?
Choose one answer below.
A
1 inch
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B
1/4 inch
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C
2 inches
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D
4 inches
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QUESTION 15 / 25
What type of scour is primarily related to sediment transport in conjunction with local scour?
Choose one answer below.
A
Live-bed scour
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B
Clear-water scour
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C
General scour
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D
Contraction scour
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QUESTION 16 / 25
How are channel beams typically constructed?
Choose one answer below.
A
Cast integral components
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B
Precast segments
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C
Both cast-in-place and precast
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D
Composite assemblies
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QUESTION 17 / 25
What does general scour refer to?
Choose one answer below.
A
Lowering of the streambed across water at the bridge
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B
Building up of sediment on the channel bed
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C
Local removal of bed material due to flow
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D
Scouring under a bridge due to construction
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QUESTION 18 / 25
Which term refers to the sloped sides of a channel?
Choose one answer below.
A
Thalweg
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B
Streambank
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C
Flood Plain
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D
Channel
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QUESTION 19 / 25
Guide signs on the road are designed to help drivers with what?
Choose one answer below.
A
Understanding traffic laws
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B
Finding parking spots
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C
Reaching their destination safely
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D
Avoiding toll roads
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QUESTION 20 / 25
What does sonic testing primarily detect in timber?
Choose one answer below.
A
Decay and low-density regions
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B
Flaws and cracks
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C
Moisture content
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D
Subsurface information
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QUESTION 21 / 25
When developing continuity between spans in bridge construction, what methods can be used?
Choose one answer below.
A
Only conventional reinforcement
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B
Only post-tensioning methods
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C
Conventional reinforcement and post-tensioning
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D
Neither method is suitable
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QUESTION 22 / 25
What type of joint is characterized by two slotted steel anchorages and a neoprene seal?
Choose one answer below.
A
Compression joint
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B
Strip seal expansion joint
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C
Sliding plate joint
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D
Poured joint
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QUESTION 23 / 25
What is the function of drainage troughs located under open joints?
Choose one answer below.
A
To enhance structural integrity of the bridge
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B
To divert runoff away from components
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C
To hold excess water
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D
To act as a support system for the bridge
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QUESTION 24 / 25
What distinguishes the assembly joint with seal - plank from other joint types?
Choose one answer below.
A
It allows no joint movement
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B
It consists of an elastic material
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C
It can support loads while allowing movement
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D
It is less durable than other joint types
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QUESTION 25 / 25
In what direction do flexure cracks primarily occur relative to the primary reinforcement?
Choose one answer below.
A
Parallel
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B
Perpendicular
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C
Diagonal
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D
Radial
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