A smoke alarm in a construction area on Level 5 in the main terminal, around 11:16 a.m. Wednesday, prompted officials to block access to passenger trains linking the terminal to concourses as a precaution.
Trains between DIA’s three concourses kept running, but travelers could not go to the main air terminal. They had to take the A Bridge pedestrian walkway from the A Concourse to the terminal. Travelers in the C and B concourses could take the trains to the A Concourse and then use the bridge walkway.
“We made the trains temporarily unavailable going to the main terminal for safety,” DIA spokeswoman Ashley Forest said. “We had employees helping to assist passengers to move them to the bridge.”
Denver Fire Department investigators looked into the cause of the smoke and concluded there was smoke confined to the construction area, Forest said. The source of the smoke, and whether there was a fire, wasn’t clear, Forest said.
The train system was back up to normal around 12:50 p.m.
