An unidentified mechanical failure caused TRAX trains north of 3300 South to stop for about 90 minutes early Saturday morning.

Carrie Bohnsack, spokeswoman for the Utah Transit Authority, said the outage occurred around 5 a.m. UTA set up a temporary system of busses to shuttle people between Salt Lake Central Station and 3300 South. The university line was also stalled, and shuttles were dispatched there as well.

The transit system was functioning normally about 6:30 a.m. The mechanical catalyst that preceded the stall is still unknown, Bohnsack said.

Saturday is a light day for transit use, she said. Bohnsack estimated about 1,000 to 2,500 riders were affected by the breakdown.

— Clayton Norlen