Received a call from the police for a trailer that had lost its axles. I responded in my 50-30T35 and found the axles, dot bumper, and axle track out in the field and the rest of the trailer on the road. Trailer was loaded with 30,000 lbs of mail. I lifted the back of the trailer off the road, blocked it up to were I could get my under lift under it and fork it. We then put our dolly under the front of the trailer and then towed it 2 miles to were we offloaded it into the customers other trailer.