San Angelo – Update at 9:30 p.m. – Mertz Ranch wildfire has burned about 700 acres and is 90 percent contained.
FM 853 has re-opened.
The Texas Forest Service and area volunteer firefighters responded to a wildfire on the Mertz ranch west of San Angelo in Irion County at little after two this afternoon.
Fire lines have been completed around the fire — crews will return to finish tomorrow morning.
A Texas Forest Service spokesman says the fire was caused by welding.
FM 853 has re-opened for traffic after being temporarily closed.