(KMOV)-- The Arch is back in service after a group of people were trapped at the top Thursday afternoon.
According to Park Service, the doors on the south leg tram would not close at the top. About 100 people waited an hour while the north leg tram took them down.
Authorities said the problem was a glitch in the new computer system installed to fix some of the problems with the tram over the last 10 years.
The north leg tram is being outfitted with upgrades this week. The south leg tram is now operational.