Saia reported August 2026 LTL tonnage per workday up 8.7% year over year (Saia 8-K, Sep 3, 2026), and every additional LTL shipment is another chance for a reweigh or reclass correction on the invoice. Those corrections almost always trace back to the bill of lading: a weight that was estimated, a class that was guessed, dimensions that were never measured or an accessorial that wasn't declared. The cheapest place to catch them is before pickup, by checking the BOL against the order and the quote. The second cheapest is the moment the correction invoice arrives.

What are LTL carriers reporting?

The August updates from two of the largest LTL carriers show a market where freight and pricing are both moving:

• Saia: LTL tonnage per workday up 8.7% year over year in August (Saia 8-K, Sep 3, 2026).
• Old Dominion: August revenue per day up 12.4% year over year, with LTL tons per day down 0.9% (ODFL, Sep 3, 2026).

The two reports describe different things. Saia's number points to more weight moving through its network. Old Dominion's points to higher revenue on roughly flat tonnage, which reflects yield and pricing as much as volume. Taken together, the picture for shippers and brokers is that LTL freight is getting busier and more expensive at the same time. Both conditions make BOL accuracy matter more: more shipments mean more chances for an error, and higher rates mean each correction costs more.

Why do reweigh and reclass corrections happen?

Corrections happen when what the carrier measures at the dock does not match what the BOL says. LTL carriers price on weight, freight class, dimensions and declared services. When any of those is wrong, the carrier corrects it and bills the difference, often with an inspection fee on top.

• Weight — Common error: Estimated from the order, not scaled · What the carrier bills: Reweigh correction at the higher weight
• Freight class — Common error: Class guessed or copied from an old shipment · What the carrier bills: Reclass correction to the inspected class
• Dimensions — Common error: Missing or rounded down · What the carrier bills: Density-based reclass or cubic charges
• Accessorials — Common error: Liftgate, residential or limited access not declared · What the carrier bills: Accessorial charges added after delivery

Classification itself has been changing, which adds another source of mismatch. We covered that separately in our guide to NMFC LTL classification changes and automation. This post is about the more basic problem: the data on the BOL being wrong regardless of which class rules apply.

Carrier rule changes can also shift what counts as a valid quote. When a carrier changes how it defines volume or partial shipments, quotes built on the old definition produce corrections on the new one, as we explained in our post on R+L's LTL definition change for volume and partial quotes.

How much do these corrections cost?

The cost is not just the correction amount. It is the margin you lose when the correction can't be passed to the customer, the time spent disputing it and the customer friction when it can be passed on.

For a broker or 3PL, a correction usually lands in one of three ways:

1. Billed back to the shipper. The customer gets a second invoice weeks after delivery. Some accept it; many push back.
2. Absorbed. The customer was quoted all-in, the correction can't be billed and the margin on that shipment goes negative.
3. Disputed. Someone pulls the BOL, the inspection report and the quote, and argues with the carrier. That takes hours per shipment.

Invoice errors of every kind add up quickly, a point we made in our analysis of how freight invoice errors cost $200K and how to stop them. Reweigh and reclass corrections are one of the largest categories in LTL.

How do you catch BOL errors before pickup?

Catch them by comparing three documents before the carrier arrives: the customer's order, the quote and the BOL. Where they disagree on weight, class, dimensions, piece count or accessorials, someone confirms the correct value with the shipper before the freight moves.

A document agent can run that check on every LTL shipment:

1. Read the order and the BOL. The agent extracts weight, piece count, dimensions, class and declared accessorials from both, whether they arrive as PDFs, emails or portal entries.

2. Compare against the quote. If the BOL says 1,400 pounds and the quote was built on 1,000, or the BOL lists a different class than the one quoted, the shipment is flagged.

3. Check density against class. When dimensions and weight are both present, the agent calculates density and flags classes that look inconsistent with it.

4. Ask the shipper before pickup. For flagged shipments, the agent emails the shipper contact with the specific question: confirm weight, provide dimensions, confirm liftgate at delivery. The answer updates the BOL and, if needed, the quote.

5. Flag delivery accessorials. Residential addresses, limited-access locations and liftgate needs are checked against the delivery address and the order notes.

How do you handle corrections that still arrive?

Some corrections will still come through. Handle them the day they arrive, with the evidence attached.

• Match the correction to the shipment. Pull the BOL, quote, order and any shipper confirmation.
• Check the inspection data. Compare the carrier's reweigh or reclass against what the shipper confirmed before pickup.
• Route the outcome. If the correction is valid and billable, bill the customer with the inspection report attached. If the shipper's confirmed data contradicts the carrier, open a dispute. If it was your error, record it so the pre-pickup check catches that pattern next time.

The last step is what makes this improve over time. Every correction is a data point about which shippers, products or lanes produce bad BOLs.

Frequently asked questions

What is an LTL reweigh? A correction the carrier issues when the scaled weight of a shipment is higher than the weight on the BOL. The shipment is rebilled at the higher weight, often with an inspection fee.

What is an LTL reclass? A correction to the freight class on the BOL after the carrier inspects the shipment, usually because density or the commodity description doesn't match the declared class.

How can BOL errors be prevented? Compare the order, quote and BOL before pickup, check density against the declared class and confirm weight, dimensions and accessorials with the shipper when they don't match.

Is LTL volume rising? It varies by carrier. Saia reported August tonnage per workday up 8.7% year over year (Saia 8-K, Sep 3, 2026), while Old Dominion reported revenue per day up 12.4% on tons per day down 0.9% (ODFL, Sep 3, 2026).

The bottom line

More LTL freight and higher LTL pricing make every BOL error more expensive. Check the BOL against the order and quote before pickup, confirm weight, class and accessorials with the shipper when they disagree, and reconcile every reweigh and reclass invoice with evidence the day it arrives.

Debales deploys AI agents for BOL validation, pre-pickup shipper confirmations and reweigh and reclass invoice reconciliation for LTL freight. Book a demo.