Axle spacing report

If your vehicle is overweight, you will need an axle spacing report number. Get your axle spacing report number using the calculator on this page.

The axle spacing report number is required for each overweight permit. The report number will be assigned to the configuration.

To create your axle spacing report number, you will need the tire size of all two-tire axles and the distance between each axle (feet and inches). This is a helpful tool for knowing the weight limitations of a vehicle combination or single unit:

After calculating and saving the axle spacing report, an axle spacing report number will be provided. This report number will always be assigned to the combination. If you have any trouble, there is a step-by-step tutorial for help with the axle spacing report (PDF 112KB).

 

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

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to our monitoring program in 2021 to help offset climate change impacts.