The crude oil leak from a train that derailed in Dodge County on Aug. 15 has been contained and one rail track is reopened, officials said.

The leak began after about 22 trains cars derailed from a train operated by CPKC, the company formerly known as Canadian Pacific Railroad, between Maiden Lane Road and the village of Reeseville in the town of Lowell.

In an Aug. 16 news release, the Dodge County Sheriff’s Office said CPKC officials confirmed that all leaking rail cars had been contained.

Later that afternoon, CPKC spokesperson Patrick Waldron said in a statement that workers repaired and reopened one rail, while another remains closed. The track is shared by Amtrak trains carrying passengers between Milwaukee and Minneapolis.

Officials have yet to determine the cause of the derailment. No one was injured in the incident.

In the statement, Waldron said he could not speak to the track’s inspection history due to the ongoing investigation into the derailment. Generally, the company uses visual inspections and “ultrasonic and geometric testing” to evaluate its rails, he said.

In the meantime, authorities asked the public to avoid the village of Reeseville, Danville Road, Caine Warehouseing and Maiden Lane Road, as they expect heavy traffic through the weekend.

CPKC teams did not find any hazards in overnight air quality monitoring, the company said. CPKC will continue air monitoring and has “environmental and hazardous material teams” on site to continue investigating the derailment.

At an earlier news conference, Clyman-Lowell-Reeseville Fire Chief Eric Howlett said the derailed train cars were leaking about 1 gallon of crude oil a minute.

The crash is the second train derailment that has occurred in recent years in Dodge County. In July 2023, a then-Canadian Pacific train derailed in the Town of Lowell.

Since 2022, there have been 48 train derailments in Wisconsin, according to Federal Railroad Administration data between 2022 and May 31, 2025. There have been two derailments between January and May 31, according to the data.

(This story has been updated to correct an error and to add new information.)

David Clarey is a public safety reporter at the Milwaukee Journal Sentinel. He can be reached at dclarey@gannett.com.

This article originally appeared on Milwaukee Journal Sentinel: Crude oil leak from train derailment in Dodge County contained