LEWISTON, Idaho (AP) — Three firefighters have been injured battling a wildfire burning on the Idaho side of the Snake River across from Oregon and Washington.

Fire spokeswoman Jill Cobb says one firefighter received a 3-inch gash on his right leg from a chain saw and required stiches. Another firefighter suffered heat related problems and a third sustained a scratched cornea. The fire on Friday grew to 76 square miles and destroyed a sixth structure.

But Cobb says an 8-mile fire line built on the north side of the Big Cougar Fire appears to be holding. Cobb says at least 200 homes are near the fire and residents have been told to evacuate or be ready to evacuate. About 450 firefighters plus aircraft are battling the blaze bordered by the Snake and Salmon rivers.