Firefighters said four construction workers were initially trapped by the smoke.
While the fire did make it to two alarms, it was controlled within 10 minutes, according to firefighters.
(PHOTOS: The most expensive airports in America)
Airport costs across the United States These are the most expensive airports to the least expensive, according to average airfare data from FinanceBuzz.com.
Airport costs across the United States 45. Washington-Dulles
Airport costs across the United States 44. San Francisco
Airport costs across the United States 43. Salt Lake City
Airport costs across the United States 42. Charlotte
Airport costs across the United States 41. Detroit
Airport costs across the United States 40. Dallas-Fort Worth
Airport costs across the United States 39. New York City-JFK
Airport costs across the United States 38. Minneapolis-Saint Paul
Airport costs across the United States 37. Houston
Airport costs across the United States 36. Newark
Airport costs across the United States 35. Portland
Airport costs across the United States 34. Los Angeles
Airport costs across the United States 33. Philadelphia
Airport costs across the United States 32. Atlanta
Airport costs across the United States 31. Kansas City
Airport costs across the United States 30. Orange County-John Wayne Airport
Airport costs across the United States 29. St. Louis
Airport costs across the United States 28. Seattle
Airport costs across the United States 27. Indianapolis
Airport costs across the United States 26. Sacramento
Airport costs across the United States 25. Washington D.C.-Ronald Reagan
Airport costs across the United States 24. Boston
Airport costs across the United States 23. Chicago-O'Hare
Airport costs across the United States 22. San Antonio
Airport costs across the United States 21. San Diego
Airport costs across the United States 20. Pittsburgh
Airport costs across the United States 19. Phoenix
Airport costs across the United States 18. Austin
Airport costs across the United States 17. Raleigh
Airport costs across the United States 16. Baltimore
Airport costs across the United States 15. Honolulu
Airport costs across the United States 14. Nashville
Airport costs across the United States 13. Denver
Airport costs across the United States 12. Cleveland
Airport costs across the United States 11. Miami
Airport costs across the United States 10. Dallas-Love Field
Airport costs across the United States 9. San Jose
Airport costs across the United States 8. Tampa
Airport costs across the United States 7. New York-LaGuardia
Airport costs across the United States 6. New Orleans
Airport costs across the United States 5. Chicago-Midway
Airport costs across the United States 4. Oakland
Airport costs across the United States 3. Las Vegas
Airport costs across the United States 2. Fort Lauderdale
Airport costs across the United States 1. Orlando
All four construction workers were then able to self-evacuate and did not suffer any injuries.
Airport officials told Channel 9 that the tower was out of commission and not in use at the time of the fire.
“It is to be noted that this is the old FAA control tower for the airport and that normal air traffic control operations were not impeded during this operation,” said Charlotte Fire Batallion Chief John Lipcsak.
One witness said he saw flames coming from the bottom of the structure that eventually made their way up.