I-15 Incident 8-14-2023

[Bduck]

I was heading south bound to the Farmington Station when traffic came to a crawl in all lanes. As I was nearing the Antelope exit, noticed about a dozen + vehicles on the shoulder with several UHP cars & Incident Management vehicle. At first, I thought it was a pileup accident but looking closer I seen all vehicles had flat tires, most had between 2-3 flats. Has anyone heard what had happened? Haven't been able to find any news on this yet. Possible contractor spilling box of nails?