Underpass (noun)

A road, railway, or canal that passes under another road, railway, or canal.

Origin:

From under- + pass.

Examples:

1. The underpass was a convenient shortcut for drivers during rush hour.
2. The underpass was used by trains to bypass the main station.
3. Many underpasses are designed to allow for smooth and efficient transportation.
4. The underpass was often congested with cars during peak hours.
5. The underpass was a useful alternative to the overpass during road closures.