Roadblock (noun)

1. A barrier or obstacle on a road or path that prevents or hinders passage.
2. Something that obstructs progress or prevents achievement of a goal.

Origin:

Compound word: road + block.

Examples:

1. The construction work was causing a roadblock on the highway.
2. The lack of funding was a major roadblock for the project.
3. The roadblock was removed and the traffic resumed.
4. The new regulation was a roadblock for the company's expansion plans.
5. The roadblock was a physical barrier put up by the police to control traffic.