DURANGO — A wildfire in southwestern Colorado forced hundreds of evacuations and was expected to reach homes by Friday, authorities said. The week-old blaze has blackened nearly 8 square miles (20.7 square kilometers) about 10 miles (16 kilometers) north of Durango and is encroaching on the town of Hermosa, where residents of nearly 500 homes were told to leave Thursday. "That's pretty much where we're putting everyone, most of the crews," Vickie Russo, a spokeswoman for the team managing the blaze, told The Durango Herald .