A construction worker who fell 40 feet down an elevator shaft at Salt Lake International Airport has died, airport officials confirmed Sunday.

The man, 50, was working with the company Holder-Big D Joint Venture on Wednesday when he fell. The airport is being rebuilt as part of a massive $3.6 billion expansion.

“We are deeply saddened that the worker injured on Jan. 30 has passed away," read a news statement by Holder-Big D. "To ensure the privacy of the family during this difficult time, no additional information can be provided. Our deepest condolences go out to his family, friends and coworkers.”