Update, 5:45 p.m. Wednesday, Sept. 12: Incident commanders say the Delta Fire has now burned just under 54,000 acres -- about 80 square miles, or roughly the size of Oakland -- and is 15 percent contained.
With the fire in the Interstate 5 corridor at least partly contained, limits on travel along the highway were relaxed Wednesday. All truck restrictions, including those that banned big rigs carrying flammable cargo, were lifted.
Caltrans says daytime traffic along a 1.5-mile stretch between Lamoine and Pollard flat may be limited to one lane while crews continue to repair infrastructure damaged shortly after the fire broke out last week.
The Shasta County Sheriff's Office announced that it was lifting some mandatory evacuation orders along I-5. The orders will remain in place for areas adjacent to two freeway off-ramps that remain closed.
In another milestone of sorts for the blaze, flames advancing on its southwestern edge are close to connecting with the area burned by this summer's Carr Fire, which consumed 230,000 acres. The Delta fire has already reached the perimeter of another large blaze, the Hirz Fire, which has been burning for a month northeast of Redding.
The three fires together have burned 330,000 acres -- more than 500 square miles.
Update, 10:45 a.m. Monday, Sept. 10: Interstate 5 between Redding and Mount Shasta has been reopened, but with travel restricted to one lane in each direction for approximately 17 miles, according to Caltrans in a tweet.
The highway was shut down from 10 miles north of Redding to about 5 miles south of the town of Mount Shasta last Wednesday after the Delta Fire started in the mountains north of Redding. The blaze has now scorched 47,110 acres and is 5 percent contained.
Caltrans said last week the agency will spend about $10 million to fix that stretch of the interstate, work that could take weeks to complete and could likely cause future travel delays.