A large chunk of a mountain pass highway in Wyoming has collapsed, severing a well-traveled commuter link between small towns in eastern Idaho and the tourist destination of Jackson. Aerial photos and drone video show the Teton Pass road riven with deep cracks, and a big section of the pavement has disappeared altogether. Part of the guardrail dangles into the void, and orange traffic drums mark off the area. Authorities said Saturday that the road was closed at the time of the collapse. That section of road first drew attention Thursday, when damage to the pavement contributed to the crash of a motorcycle. It’s unclear how long repairs will take.