* In the early morning hours of Aug.19, a fuel tanker truck lost control and rolled over near mile marker 16 on U.S. Hwy 191, a section of highway that runs through the western portion of Yellowstone National Park.
* An estimated 4,800 gallons of unleaded fuel spilled as a result, and it is unknown if any entered nearby Grayling Creek.
* Currently, the southbound lane of the highway is blocked but is passable in both directions with traffic control in place. Motorists should anticipate delays.
* National Park Service crews responded immediately. Mitigation cleanup efforts are ongoing.
* There were no injuries.
* This incident remains under investigation and the park has no additional information to release.
* Yellowstone thanks those who responded to the scene, including Hebgen Basin Fire and EMS units, cleanup and mitigation contractors and NPS staff.
* Stay informed! For up-to-date road information, visit go.nps.gov/YellRoads, call (307) 344-2117 for a recorded message, or sign up to receive Yellowstone road alerts on your mobile phone by texting "82190" to 888-777.
Source: U.S. Department of the Interior, National Park Service
