All northbound lanes of the Sam Rayburn Tollway (SRT) at Carrollton Parkway are closed at this time due to an 18-wheeler accident, according to the North Texas Tollway Authority. 

The Department of Public Safety is working an 18-wheeler accident/vehicle fire on northbound SRT at the Carrollton Parkway exit.  According to officials, the vehicle fire has been put out at this time.

All northbound SRT lanes are closed to traffic along with the Carrollton Parkway exit ramp. Traffic is being diverted at Huffines/Marchant exit. All southbound SRT lanes remain open.

This accident will affect commuters headed to McKinney/Allen from the D-FW Airport.

The NTTA website,, along with roadway message boards have been activated to alert drivers of the accident and lane closures.

The Texas Department of Transportation has also placed a portable message board on the north- and southbound lanes of Interstate 35 to alert drivers wishing to exit to northbound SRT.

More information to follow as it becomes available.