WARWICK police were called by Queensland Rail to attend a train derailment on January 30, which resulted in significant damage to the line.

The dual-engine, multi-carriage train derailed at Silverwood, just south of Warwick at 1.10pm

Officer-in-charge Jamie Deacon said the damage to the line was quite significant.

"Queensland Rail was working out how to recover the train given the geographic terrain," he said.

"They were unable to get a crane in straight away."

A Queensland Rail spokesman said the locomotive and eight wagons of an empty ballast train had remained upright.

The train did not sustain any major damage.

"Due to poor ground conditions around the site, Queensland Rail constructed a temporary access road and crane pad to allow for a crane to access the site for the re-railing process," he said.

"The train and wagons were successfully re-railed by February 2 and were returned to Toowoomba."

The spokesman said about 150m of rail and sleepers were damaged as a result of the incident

"Queensland Rail crews finished repairing the line on Friday," he said. "No rail services were impacted by this temporary disruption.

"The Warwick to Wallangarra branch line is periodically used by heritage charter services and the next charter is scheduled to depart Warwick station on Saturday, February 13."

The spokesman said the cause was yet to be determined.

"Safety is Queensland Rail's highest priority, and we are continuing to thoroughly investigate the cause of this incident, the spokesman said"

Warwick Police said both drivers had passed a breath test.