By Luis Lopez, AI transportation consultant, CEO of Go Hub.io Holdings Corp and subsidiaries, and host of the Freight Guru Podcast
Wet freight is one of the most frustrating kinds of cargo damage. Cartons collapse, labels peel, metal rusts, and product that looked fine at pickup arrives stained or ruined. Water damage claims are also among the most disputed, because moisture can come from many sources: a leaking trailer roof, condensation, rain during loading, a wet dock floor, or packaging that was damp before it ever left the shipper. This article explains how liability works for water-damaged freight moving by motor carrier in the United States and how to build a claim that holds up.
The Legal Framework: Carmack
For interstate shipments by motor carrier, cargo liability is generally governed by the Carmack Amendment, 49 U.S.C. 14706. Carmack makes the carrier liable for actual loss or injury to the property it transports, subject to certain defenses and to any valid limitation of liability. Our overview of the Carmack Amendment and cargo liability covers the background.
Under Carmack, a claimant generally establishes a prima facie case by showing three things:
- The goods were delivered to the carrier in good condition.
- The goods arrived damaged, or did not arrive.
- The amount of the loss.
Once that is shown, the burden typically shifts to the carrier to prove both that it was not negligent and that the damage was caused by one of the recognized exceptions: an act of God, an act of a public enemy, an act of the shipper, an act of public authority, or the inherent nature of the goods.
Why Water Damage Claims Get Disputed
Water damage often lands right on the line between carrier fault and one of those exceptions. Common arguments include:
- Act of the shipper. The carrier may argue the packaging was inadequate, the freight was already wet, or the shipper loaded and sealed the trailer.
- Inherent nature of the goods. Some products release moisture or are sensitive to humidity. The carrier may argue the product itself caused the condition.
- Act of God. Severe weather is sometimes raised, but ordinary rain is usually foreseeable, and carriers are generally expected to protect freight from normal weather with a sound trailer.
- Good condition at origin. If the bill of lading was signed clean but the freight was in a sealed trailer the driver never saw loaded, the carrier may dispute what the clean receipt actually proves.
Common Sources of Moisture
Trailer Leaks
Holes in the roof, failed seals around doors, damaged sidewalls, and worn floors can all let water in. Leaks are often the strongest case for carrier liability, because providing equipment fit to carry the freight is generally the carrier’s responsibility. Water stains concentrated under a specific roof section or near the doors are useful evidence.
Condensation
Temperature swings can cause moisture to condense inside a trailer or container and drip onto cargo. Whether condensation damage is the carrier’s responsibility can depend on the facts: the condition of the equipment, how the freight was packed, whether the product itself carried moisture, and what the shipper requested. These cases are often harder to win and benefit from early expert input.
Handling and Weather Exposure
Freight can get wet while sitting on an open dock, during transfer at an LTL terminal, or while being loaded in the rain. Terminal handling records and delivery receipts help show where the freight was exposed.
Wet Before Pickup
Pallets stored outdoors, damp warehouse floors, or wet wooden pallets can transfer moisture to freight before the carrier ever touches it. Shippers should check their own processes honestly before filing.
Documenting the Damage
Water damage evidence fades quickly. Freight dries, stains spread, and mold can change the picture within days. Act fast:
- Note it on the delivery receipt. Write specific exceptions such as “cartons wet, bottom layer collapsed” rather than vague language.
- Photograph everything before unloading further, including the trailer interior, the roof, the door seals, the floor, and the position of wet freight in the load.
- Record the seal number and whether the seal was intact.
- Keep the damaged freight and packaging available for inspection, and do not discard it without the carrier’s agreement.
- Request a carrier inspection promptly, especially if damage is found after delivery.
If the water damage was not visible until the freight was unpacked, the rules and practical challenges of concealed damage apply. Our article on concealed damage claims explains what to do.
Filing the Claim Under 49 CFR Part 370
The federal claim regulations at 49 CFR Part 370 set out the basic requirements for a cargo claim against a motor carrier. A claim generally must be in writing, contain enough facts to identify the shipment, assert liability for the loss or damage, and make a claim for a specified or determinable amount of money.
The same regulations require the carrier to acknowledge a claim in writing within 30 days of receipt and, within 120 days, to pay, decline, or make a firm compromise offer. If it cannot resolve the claim within 120 days, it must advise the claimant in writing of the status at 60-day intervals afterward.
Carmack also controls the minimum time limits a carrier may impose. A carrier may not require less than nine months to file a claim, or less than two years from the date it gives written notice of disallowance to file a lawsuit. Check the bill of lading and tariff for the actual time limits that apply. Our guide on how to file a freight claim that gets paid covers the supporting documents in detail.
Limits of Liability and Salvage
Recovery may be capped by a released value or limitation of liability in the bill of lading or tariff, which is common in LTL. Know your declared value before you ship.
Water-damaged freight sometimes has salvage value. The carrier may have rights to damaged goods after paying a claim, and claimants are generally expected to take reasonable steps to limit their loss. Our piece on cargo claims and salvage rights explains how that works.
A Note on Other Modes
Carmack applies to domestic motor carrier and rail shipments. Water damage that occurs on an ocean voyage is governed by a different legal regime, such as the Carriage of Goods by Sea Act for many shipments to and from the United States, with different defenses and time limits. For intermodal moves, identifying where the damage happened is an important first step.
Prevention
- Inspect trailers before loading. Look up from inside a closed trailer for daylight through the roof.
- Use moisture-resistant packaging and stretch wrap for sensitive goods.
- Keep freight and pallets off wet floors and out of the rain.
- Consider desiccants or moisture indicators for humidity-sensitive products.
AI-assisted claims tools can help by organizing photos, extracting delivery exceptions from scanned documents, and tracking claim deadlines, but the outcome still depends on evidence gathered in the first hours after delivery.
For more conversations on freight and AI, subscribe to the Freight Guru Podcast.
About the author: Luis Lopez is a Miami-based AI transportation consultant and logistics entrepreneur, the CEO of Go Hub.io Holdings Corp and subsidiaries, and host of the Freight Guru Podcast.
This article is general information for the freight community, not legal advice. Talk to a transportation attorney about your specific situation.