Drivers headed to Stillwater concert events should plan ahead and expect additional delays in around ongoing construction including work zones, says Oklahoma Turnpike Authority.

The Oklahoma Highway Patrol is currently addressing ... According to OHP, the first two incidents happened simultaneously on the Cimarron Turnpike at mile marker 16. Officials said other rollovers ...

They say a semi ran one over, dragging it all the way to Cimarron, where it almost ended up on the interstate. They are still working to clear the boulder in the road. Slower speeds are advised.