No cause had been determined for the late-morning collapse, but no one was injured, Preske said.
The distillery, located in Bardstown, Kentucky near Louisville, had a large section of its storage fall to the ground, sending thousands of barrels tumbling. No one was inside at the time and no injuries were reported.
The building dates back to 1940, according to Bardstown Fire Chief Billy Mattingly.
According to WHAS-TV, the Bardstown, Kentucky, bourbon warehouse holds 20,000 barrels.
"We are assessing how numerous impacted barrels can be recovered", Preske said in a press release.
Spalding says about half of the structure is still standing.
It may be several days or weeks before a full assessment of the damage to Warehouse 30 at Barton 1792 is fully complete.
The collapse will not affect normal operations at the distillery which will continue to be open for tours and will resume business operations.
Nelson County Dispatch Director Milton Spalding said it's unclear what caused the collapse. At this time we do not know which Barton 1792 brands or customers will be impacted.
Officials are working to determine if any of the liquor spilled out.
The warehouse was built on a concrete foundation and had a wooden structure with aluminum siding, Spalding said.
"We've had some warehouse fires, but I can't recall having a collapse", he said.
Barton 1792 Distillery is owned by Sazerac, which is based in New Orleans and also owns Buffalo Trace Distillery in Frankfort. A local dispatcher responding on the scene said the air smelled of bourbon, though that's not atypical for an aging facility.
Bardstown is about 40 miles (64 kilometers) south of Louisville.