CO Bridge Construction Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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1. What is the primary purpose of a bridge abutment?
A. To support traffic signals
B. To provide roadway drainage
C. To support the ends of the bridge superstructure and retain the
approach fill
D. To reduce pavement friction
Rationale: An abutment supports the end of the bridge superstructure
and typically retains the soil forming the roadway approach. It
transfers structural loads into the foundation while also resisting
lateral earth pressure.
2. Which component of a bridge primarily spans the distance
between supports?
,A. Footing
B. Abutment
C. Pier cap
D. Superstructure
Rationale: The superstructure consists of the structural elements that
span between supports and carry traffic loads. Girders, beams, decks,
and related components are typically part of the superstructure.
3. What is the primary function of a bridge deck?
A. To anchor piles
B. To provide the roadway surface and distribute traffic loads to the
supporting structure
C. To retain foundation soil
D. To prevent concrete hydration
Rationale: The deck forms the roadway surface over the bridge and
distributes wheel loads to girders or other primary structural
members. It must withstand traffic, environmental exposure, and
repeated loading.
4. Which bridge component transfers loads from the superstructure
to the foundation through a vertical support?
,A. Expansion joint
B. Deck drain
C. Pier
D. Approach slab
Rationale: A pier is an intermediate vertical support located between
abutments. It transfers superstructure loads through the pier shaft or
columns, pier cap, and foundation into the supporting soil or rock.
5. Why are bridge bearings installed between a superstructure and
its supports?
A. To increase concrete strength
B. To prevent all structural movement
C. To transfer loads while accommodating required movement and
rotation
D. To eliminate the need for expansion joints
Rationale: Bearings transmit vertical and, depending on the design,
horizontal forces while permitting controlled translation and rotation.
This movement accommodates thermal expansion, contraction, and
structural deformation.
6. Which type of foundation transfers structural loads primarily
through the bearing capacity of soil or rock directly beneath the
footing?
, A. Suspension foundation
B. Spread footing
C. Cable foundation
D. Floating deck
Rationale: A spread footing distributes loads over a relatively broad
area and transfers them to competent soil or rock near the surface.
Proper bearing capacity and settlement considerations are essential.
7. When weak soils exist near the ground surface, which foundation
system may be used to transfer loads to deeper competent
strata?
A. Curb footing
B. Slab-on-grade
C. Deep foundation
D. Asphalt base
Rationale: Deep foundations, such as driven piles or drilled shafts,
transfer structural loads to deeper soil or rock through end bearing,
skin friction, or a combination of both.
8. What is the main purpose of a cofferdam during bridge
construction?
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
1. What is the primary purpose of a bridge abutment?
A. To support traffic signals
B. To provide roadway drainage
C. To support the ends of the bridge superstructure and retain the
approach fill
D. To reduce pavement friction
Rationale: An abutment supports the end of the bridge superstructure
and typically retains the soil forming the roadway approach. It
transfers structural loads into the foundation while also resisting
lateral earth pressure.
2. Which component of a bridge primarily spans the distance
between supports?
,A. Footing
B. Abutment
C. Pier cap
D. Superstructure
Rationale: The superstructure consists of the structural elements that
span between supports and carry traffic loads. Girders, beams, decks,
and related components are typically part of the superstructure.
3. What is the primary function of a bridge deck?
A. To anchor piles
B. To provide the roadway surface and distribute traffic loads to the
supporting structure
C. To retain foundation soil
D. To prevent concrete hydration
Rationale: The deck forms the roadway surface over the bridge and
distributes wheel loads to girders or other primary structural
members. It must withstand traffic, environmental exposure, and
repeated loading.
4. Which bridge component transfers loads from the superstructure
to the foundation through a vertical support?
,A. Expansion joint
B. Deck drain
C. Pier
D. Approach slab
Rationale: A pier is an intermediate vertical support located between
abutments. It transfers superstructure loads through the pier shaft or
columns, pier cap, and foundation into the supporting soil or rock.
5. Why are bridge bearings installed between a superstructure and
its supports?
A. To increase concrete strength
B. To prevent all structural movement
C. To transfer loads while accommodating required movement and
rotation
D. To eliminate the need for expansion joints
Rationale: Bearings transmit vertical and, depending on the design,
horizontal forces while permitting controlled translation and rotation.
This movement accommodates thermal expansion, contraction, and
structural deformation.
6. Which type of foundation transfers structural loads primarily
through the bearing capacity of soil or rock directly beneath the
footing?
, A. Suspension foundation
B. Spread footing
C. Cable foundation
D. Floating deck
Rationale: A spread footing distributes loads over a relatively broad
area and transfers them to competent soil or rock near the surface.
Proper bearing capacity and settlement considerations are essential.
7. When weak soils exist near the ground surface, which foundation
system may be used to transfer loads to deeper competent
strata?
A. Curb footing
B. Slab-on-grade
C. Deep foundation
D. Asphalt base
Rationale: Deep foundations, such as driven piles or drilled shafts,
transfer structural loads to deeper soil or rock through end bearing,
skin friction, or a combination of both.
8. What is the main purpose of a cofferdam during bridge
construction?
