What is a Non-Divisible Load?

A non-divisible load is one that cannot practically be split into smaller legal loads. It is the question that comes before every other question in oversize and overweight work: if a load is divisible, the answer is not "what does the permit cost" — it is "split the load", because no permit is available for it on the federal test.

"any load or vehicle exceeding applicable length or weight limits, which, if separated into smaller loads or vehicles, would: (1) Compromise the intended use of the vehicle …; (2) Destroy the value of the load or vehicle …; or (3) Require more than 8 work hours to dismantle using appropriate equipment. The applicant for a non-divisible load permit has the burden of proof regarding the number of work hours required to dismantle the load. A State may treat emergency response vehicles, casks designed for the transport of spent nuclear materials, and military vehicles transporting marked military equipment or materiel as non-divisible vehicles or loads."

23 CFR §658.5, as published in the Glossary of Terms, Compilation of Existing State Truck Size and Weight Limit Laws — FHWA, May 2015. Public domain.

The 8-work-hour test is the part that settles most real arguments, because it is measurable rather than a matter of opinion — and the burden of substantiating it sits with the applicant, not with the permit office. The full federal definition, in context →