Alabama Highway, Street and Bridge
Contractor Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which document typically establishes the legal agreement between
the project owner and the highway contractor?
A. Material Safety Data Sheet
B. Equipment Log
C. Construction Contract
D. Daily Inspection Report
Rationale: The construction contract defines the rights, responsibilities,
scope of work, payment terms, and obligations of both the owner and
contractor.
2. Before beginning excavation for a roadway project, the contractor
should first:
,A. Install asphalt pavement
B. Verify underground utility locations
C. Apply pavement markings
D. Install guardrails
Rationale: Identifying underground utilities prevents service interruptions,
property damage, and serious injuries during excavation operations.
3. Which soil classification generally provides the greatest stability for
highway embankments?
A. Organic peat
B. Highly plastic clay
C. Well-graded gravel
D. Saturated silt
Rationale: Well-graded gravel provides excellent drainage, compaction,
and load-bearing capacity compared to weaker soils.
4. The primary purpose of compaction in roadway construction is to:
A. Increase soil moisture
B. Reduce excavation costs
C. Increase soil density and strength
D. Eliminate surveying
,Rationale: Proper compaction increases load-bearing capacity while
minimizing settlement and pavement failures.
5. Which testing method is commonly used to determine field
compaction?
A. Slump test
B. Schmidt hammer
C. Nuclear density gauge
D. Compression machine
Rationale: Nuclear density gauges are widely used to verify field density
and moisture content during earthwork operations.
6. What is the primary purpose of a roadway subgrade?
A. Decorative finish
B. Waterproof membrane
C. Foundation supporting pavement layers
D. Drainage ditch
Rationale: The subgrade serves as the structural foundation supporting all
pavement layers and traffic loads.
7. Which piece of equipment is primarily used for fine grading?
, A. Excavator
B. Bulldozer
C. Motor grader
D. Crane
Rationale: Motor graders provide precise grading required for roadway
profiles and final surface preparation.
8. The principal function of aggregate base is to:
A. Provide pavement markings
B. Reduce asphalt temperature
C. Distribute wheel loads
D. Replace drainage systems
Rationale: Aggregate base spreads traffic loads and improves pavement
structural performance.
9. Hot mix asphalt should generally be placed when:
A. Heavy rain is occurring
B. The base is frozen
C. Weather conditions meet specified temperature requirements
D. Snow covers the roadway
Rationale: Proper temperatures ensure adequate compaction, bonding,
and long-term pavement performance.
Contractor Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which document typically establishes the legal agreement between
the project owner and the highway contractor?
A. Material Safety Data Sheet
B. Equipment Log
C. Construction Contract
D. Daily Inspection Report
Rationale: The construction contract defines the rights, responsibilities,
scope of work, payment terms, and obligations of both the owner and
contractor.
2. Before beginning excavation for a roadway project, the contractor
should first:
,A. Install asphalt pavement
B. Verify underground utility locations
C. Apply pavement markings
D. Install guardrails
Rationale: Identifying underground utilities prevents service interruptions,
property damage, and serious injuries during excavation operations.
3. Which soil classification generally provides the greatest stability for
highway embankments?
A. Organic peat
B. Highly plastic clay
C. Well-graded gravel
D. Saturated silt
Rationale: Well-graded gravel provides excellent drainage, compaction,
and load-bearing capacity compared to weaker soils.
4. The primary purpose of compaction in roadway construction is to:
A. Increase soil moisture
B. Reduce excavation costs
C. Increase soil density and strength
D. Eliminate surveying
,Rationale: Proper compaction increases load-bearing capacity while
minimizing settlement and pavement failures.
5. Which testing method is commonly used to determine field
compaction?
A. Slump test
B. Schmidt hammer
C. Nuclear density gauge
D. Compression machine
Rationale: Nuclear density gauges are widely used to verify field density
and moisture content during earthwork operations.
6. What is the primary purpose of a roadway subgrade?
A. Decorative finish
B. Waterproof membrane
C. Foundation supporting pavement layers
D. Drainage ditch
Rationale: The subgrade serves as the structural foundation supporting all
pavement layers and traffic loads.
7. Which piece of equipment is primarily used for fine grading?
, A. Excavator
B. Bulldozer
C. Motor grader
D. Crane
Rationale: Motor graders provide precise grading required for roadway
profiles and final surface preparation.
8. The principal function of aggregate base is to:
A. Provide pavement markings
B. Reduce asphalt temperature
C. Distribute wheel loads
D. Replace drainage systems
Rationale: Aggregate base spreads traffic loads and improves pavement
structural performance.
9. Hot mix asphalt should generally be placed when:
A. Heavy rain is occurring
B. The base is frozen
C. Weather conditions meet specified temperature requirements
D. Snow covers the roadway
Rationale: Proper temperatures ensure adequate compaction, bonding,
and long-term pavement performance.
