Transbay Joint Powers Authority spokeswoman Christine Falvey told KCBS Radio, "the repair is going to consist of some steel plates above and below the problem areas."
"It's going to look like a splint, perhaps, to put it in layman's terms," said Falvey.
Steel is now being ordered to effect the repair, said Falvey. She was unable to provide a timetable for the work.
Once the repairs have been made, the shoring systems installed on First Street and Fremont Street after the discovery of the cracked beams will be removed.
An actual re-opening of the terminal to transit riders will not occur until the independent peer review panel formed in the wake of the cracked beams completes a review of other areas in the huge structure that may need to be inspected.