She’s risking her life on limbs to draw attention to an environmentally destructive highway construction project, “The Willits Bypass.” That’s a 6-mile-long, 2-lane highway. It includes a 1-mile-long 30-foot-tall concrete viaduct. And it will cut right through a valley meadow criss-crossed with streams and a wetlands. Which means The Willits Bypass project will drain and …