At 1834 DHFD Pumper 1 and Bayleaf Pumper 361 were dispatched to a reported Auto fire on I-540 EB and Leesville rd. While enroute communications advised they were receiving multiple calls on same. Vehicle was found under the Leesville rd bridge with heavy fire conditions through out the motor compartment. Durham highway extinguished while Bayleaf provided blocking/safety responsibility and water source. All units cleared within 30 mins of arrival.