Updated

Some shuttle service to dozens of gates at Orlando International Airport has shut down, creating long lines and forcing some airlines to hold flights.

Airport officials tweeted Wednesday that shuttle service to Gates 1 to 59 at the airport had been interrupted in the morning.

The service is provided by trams that connect the airport's entrance and baggage handling areas with its 129 gates.

Buses were transporting some travelers to their gates.

Airport officials said airlines were holding some flights for affected passengers.

Orlando is the nation's most visited city with 66 million visitors last year.

Around 41 million passengers passed through the airport last year.