Yongma Engineering Assistant Highway Engineer Interview Questions and Answers

The width of a 4-lane highway can vary, but it is typically around 60 to 80 feet.

• The width of a 4-lane highway depends on various factors such as traffic volume, design standards, and available space.

• In urban areas, the width can be narrower, around 60 to 70 feet, while in rural areas it can be wider, around 70 to 80 feet.

• Additional width may be required for shoulders, medians, and barriers.

• Specific design guidelines a...read more

Highways are typically composed of multiple layers to ensure durability and stability.

• Highway layers include subgrade, subbase, base, and surface layers.

• Subgrade is the natural soil or rock beneath the highway.

• Subbase layer is added to improve the strength and stability of the subgrade.

• Base layer provides additional strength and support to the pavement structure.

• Surface layer is the topmost layer that provides smoothne...read more