A fatal crash involving a semi-trailer has spilled fuel on US 85.

Northbound US 85 at Weld County Road 8 near mile marker 239 is closed while the Colorado Department of Transportation cleans up the road. It is expected to reopen early Wednesday afternoon.

According to Fort Lupton Police, the wreck happened at 4:37 a.m. when two semis collided.

A semi carrying pieces of equipment for Vestas was headed westbound on County Road 8, crossing US 85. The truck stopped at the stop sign and proceeded across the highway and made it across the northbound lanes. The driver stopped in the median for traffic in the southbound lanes. The semi's trailer was sticking out into the northbound lanes.

Another semi, a fuel tanker -- which carries about 4,000 gallons of fuel, was heading north on US 85 and hit the trailer of the other semi. The gas tank of the fuel tanker spilled diesel fuel onto the roadway and into a nearby ditch. The load of fuel the tanker was transporting did not rupture.

The driver of the fuel tanker died and the other driver was taken to a hospital with minor injuries.

The fuel is not threatening any waterways, but an environmental cleanup crew was called to help rectify the fuel spill.

Authorities say it is too soon to tell if the driver of the semi carrying equipment for Vestas will be ticketed.