Bridge law in North Carolina for Dump truck

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by Navigatorpirate, Sep 18, 2022.

  1. Navigatorpirate

    Navigatorpirate Bobtail Member

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    Mar 14, 2021
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    Hi y’all! I just bought my first quad axle dump truck and I’m trying to figure out my GWVR and how much weight I can haul. I have 2007 Mack CV713.
    I measured wheelbase from from axle hub to the middle point between tandems and I have 250in That’s means in NC my GWVR is 62500lbs. If I deduct empty weight 29280lbs I can haul 33220lbs or 15ton. Am I right?
    Besides that I have 20k from,46k tandems, 13.5k lbs each pusher.
     
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  3. NightWind

    NightWind Road Train Member

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  4. Todd727

    Todd727 Light Load Member

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    Jun 7, 2021
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    Measure from the center of the steer to the center of the fifth axle. Also, measure from the center of the fifth axle back to the second axle. Also, what is the GAWR on your front axle?

    If NC uses federal bridge formula everywhere then this attached document for the red line highways in MS will work. You just have to use the most restrictive weight, which will most likely be the five axle measurement.

    Many states do allow higher weights though when you aren't traveling on the interstates. Around me, TN and AL are much higher. You should be able to get more than 15 tons though. I can get 15 on a tri-axle using federal bridge formula and your numbers above show 16.5 tons, but you shorted yourself on that last axle measurement.
     

    Attached Files:

  5. NightWind

    NightWind Road Train Member

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    https://connect.ncdot.gov/business/trucking/documents/oversize overweight permit handbook.pdf
     
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