Unbar (verb)

1. Remove the bar or bars from (a door, gate, or window).
2. Remove the obstruction from (a path or opening).

Origin:

Un- + bar.

Examples:

1. He unbarred the door and went inside.
2. The gate was unbarred to allow the vehicles to pass through.
3. The window was unbarred to let fresh air in.
4. The path was unbarred to allow easy access.
5. The road was unbarred to allow traffic to flow.