The closure lasted just over 30 minutes The guardrail attenuator was destroyed Friday morning in a crash. ODOT's estimate of the closure length was spot on. “An attenuator is a safety feature ...

Its front wheels were elevated and stuck on a guardrail attenuator. “A witness remained on the phone with [state police] dispatchers, providing updated information about the activities and ...

The ramp was closed after a tractor-trailer hit the attenuator guardrail and overturned on the ramp about 1 a.m., prompting highway officials to issue a severe traffic alert, Musselman said.