State Police now say it was a case of drunk driving that resulted in that crash that left three people dead and several others injured on I-80 in Carbon County early Monday morning. The crash involved a tractor trailer and a van. Investigators now say the driver of the van was drunk at the time of the crash that killed two passengers… a 73 year old woman and a 36 year old man, and took the life of the 34 year old tractor trailer driver.