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How Much Weight Can a 40-ft Container Carry?
Short answer
On one major carrier's published specs, a 40-ft standard dry container is rated for a maximum payload of about 28,800 kg (63,493 lb) and a 40-ft high cube about 28,620 kg (63,100 lb). On U.S. roads the whole truck, tractor, chassis, container and cargo together, generally has to stay within 80,000 lb and the axle limits, so a container packed to its full rating usually cannot be trucked on an ordinary setup. The practical limit is set by the road, unless the move uses a permitted heavier configuration or the freight is transloaded.
What it depends on
- The container's own rating: every intermodal container is marked with its empty weight, maximum cargo weight and maximum gross weight.[3]
- Tractor and chassis weight, which count toward the truck's 80,000 lb gross on the Interstate System.[4]
- Where the weight sits: 20,000 lb per single axle, 34,000 lb per tandem, and the bridge formula for axle groups.[5]
- State permits for sealed ocean containers, which allow more weight on specific equipment and routes.[6]
The container's rating
| Container | Tare | Max payload | Max gross |
|---|---|---|---|
| 20-ft standard | 2,280 kg (5,030 lb) | 28,200 kg (62,170 lb) | 30,480 kg (67,200 lb) |
| 40-ft standard | 3,700 kg (8,157 lb) | 28,800 kg (63,493 lb) | 32,500 kg (71,650 lb) |
| 40-ft high cube | 3,880 kg (8,554 lb) | 28,620 kg (63,100 lb) | 32,500 kg (71,650 lb) |
Source: Maersk dry container specifications.[1] The same carrier's FAQ lists slightly different payloads,[2] and other carriers' boxes differ, so read the markings on the actual container.
For the ship, the shipper declares the packed container's verified gross mass before loading.[7] That number says nothing about road legality.
The road limit
On the Interstate System the gross vehicle weight limit is 80,000 lb for the whole truck.[4] So the most cargo a given truck can carry is roughly: 80,000 lb minus the tractor, minus the chassis, minus the container's tare, and then only if the load is spread so no single axle or tandem is over.
A 40-ft high cube at its full rated payload weighs about 8,554 + 63,100 = 71,654 lb before anything else is added, which leaves only 8,346 lb of the 80,000 lb for the tractor and chassis together. In other words, a container can be packed heavier than it can travel on an ordinary road unit.
When the box is heavier than the road allows
In New Jersey, the annual permit for sealed ocean-borne containers covers combinations up to 90,000 lb gross, 38,000 lb on any one tandem and 56,400 lb on a tri-axle trailer configuration, with heavier loads needing a single-trip permit.[6] The drayage carrier arranges the chassis and permit. The alternative is to open the box at a dock and transload the freight into trailers loaded within standard limits.
Example
A shipper has 22,000 kg (48,502 lb) of cargo for a 40-ft standard container, tare 8,157 lb. The container and cargo weigh about 56,659 lb. The trucker's scale ticket for the tractor and chassis gives the rest: if they weigh more than 23,341 lb together, the truck is over 80,000 lb gross and the load has to be reduced, split or moved under a permit where one applies.
Limitations
State limits off the Interstate, grandfathered limits and restricted structures vary, so check the route. Figures here are published specifications, not guarantees for any particular box.
Related
Related terms
- 40-ft ContainerA 40-ft container is a standard shipping container about 40 feet long, 8 feet wide and 8 feet 6 inches tall...Glossary
- 40-ft High Cube ContainerA 40-ft high cube container is a 40-ft shipping container that is 9 feet 6 inches tall, one foot taller than...Glossary
- Bridge FormulaThe federal bridge formula limits the weight on any group of two or more consecutive axles based on how many...Glossary
- Verified Gross MassThe verified gross mass (VGM) is the total weight of a packed container, cargo plus packaging plus the...Glossary
- ChassisA chassis is a wheeled trailer frame built to carry a shipping container over the road; the container is...Glossary
- Shipping ContainerA shipping container is a standardized steel box, most often 20 or 40 feet long and 8 feet wide, built to...Glossary
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Sources
- Maersk, “Our fleet: equipment specifications, dry containers (PDF),” Carrier equipment specification. Accessed September 30, 2026.
- Maersk, “What is the cargo weight limit for a container?,” Carrier FAQ. Accessed September 30, 2026.
- Legal Information Institute, Cornell Law School, “29 CFR § 1918.85, Containerized cargo operations,” Federal regulation. Accessed September 30, 2026.
- Legal Information Institute, Cornell Law School, “23 CFR § 658.17, Weight,” Federal regulation. Accessed September 2026.
- Federal Highway Administration, “Bridge Formula Weights,” Government guidance. Accessed September 2026.
- Legal Information Institute, Cornell Law School, “N.J.A.C. 13:18-1.2, Requirement of permit,” State regulation. Accessed September 2026.
- International Maritime Organization, “Verification of the gross mass of a packed container,” International regulation summary. Accessed September 2026.
General operational information, not legal, customs or regulatory advice. Rules and rates change; confirm current requirements with the agency, carrier or contract that governs your shipment.