Two Alabama workers were injured Tuesday when they were thrown from the bucket lift they were using after it was struck by a passing semi-tractor trailer, police said.

The workers were using the lift to work on a building Tuesday afternoon when the 18-wheeler collided with their equipment and threw them into the roadway, Troy police said.

The victims were transported to a Montgomery hospital, one by ambulance and the other by air.

One was treated and released, but the other was still listed in critical condition Wednesday.