Seven workers had to jump into Smithville Lake Friday when the barge and boat they were using capsized.
The men were working to repair a bridge on Route W near Little Platte Park. A crane being used to lift steel beams became off-balance and topped.
The men were in the lake for about 15 minutes before being rescued. One of them, 55-year-old Carl McCray of Blue Springs, was flown to an area hospital as a precaution with what the Highway Patrol calls minor injuries.
The incident is still being investigated.