Estimated construction costs have ranged from about $500 million to retain the status quo, on the one end, up to $3.2 billion to fill in the interstate and create a boulevard.

A driver pulled over to use the rest stop and returned to find the school bus engulfed in flames.

While active weather is set to wind down Wednesday after turbulent conditions the past two days, the impacts of the storms can still be felt.

A winter storm brought blowing snow that temporarily closed southbound Interstate 17 south of Flagstaff and prompted Arizona Snowbowl to shut down early Wednesday as conditions turned dangerous.

During the weekend closures, detour routes will be posted. WSDOT also warned that the detour routes cannot carry the normal SR-5522 or I-405 freeway volume.

A fifth person has died after a crash involving more than 30 vehicles on a Colorado interstate amid dangerous wind conditions Tuesday morning.