Dry Van Spot Rates Jumped 31% in May, Giving Shippers a Clearer Warning That U.S. Truckload Costs Are Repricing

Dry van spot pricing made a much sharper move in May than many domestic freight buyers had been budgeting for. The latest U.S. Bank Freight Payment Index Rates Edition, published in late June, shows dry van spot linehaul rates at $2.14 per mile in May 2026, up 31.29% year over year and 9.74% month over month, while contract rates reached $2.18 per mile, up 9.0% year over year. The underlying message is important: truckload costs are rising faster than freight demand, and the repricing is being driven primarily by tighter supply rather than a classic freight-volume boom. U.S. Bank/DAT FreightWaves, June 29, 2026

What changed in the latest data

The late-June update matters because it moves the story beyond early-cycle hints of tightening and into visible price acceleration. In the U.S. Bank/DAT report, the contract-to-spot spread narrowed to roughly $0.11 per mile in May, down from about $0.39 per mile earlier in the cycle. That compression matters operationally: when spot rates approach contract rates, routing-guide failures become more expensive to cover, mini-bids get harder to avoid, and backup procurement no longer comes with only a modest premium. FreightWaves, June 29, 2026

The same report also showed that spot shipment volume fell to about 1.11 million in May from 1.31 million in April, even as spot pricing climbed. That divergence is one of the clearest signs that the market is being repriced by capacity discipline and supply attrition, not by an overwhelming surge in loads. FreightWaves, June 29, 2026

U.S. Bank and DAT are framing this as a supply-side reset

The U.S. Bank Freight Payment Index is produced in collaboration with DAT Freight & Analytics, and its methodology is worth noting because it draws directly on market pricing rather than anecdotal carrier commentary. In the prior Q1 2026 Rates Edition, U.S. Bank and DAT had already shown spot linehaul climbing from $1.57 per mile in May 2025 to $2.01 per mile through February 2026, a roughly 28% increase from the low, while contract linehaul rose far more slowly. That earlier report explicitly argued that per-mile costs were moving ahead of any broad-based freight recovery and that spot markets were tightening before contract repricing fully followed. U.S. Bank/DAT Q1 2026 Rates Edition

The new May reading strengthens that thesis. FreightWaves’ summary of the latest U.S. Bank/DAT release said linehaul pricing had increased more than fuel costs and described the divergence between falling volume and higher rates as “a clear indicator of a supply-led transition in the market.” FreightWaves, June 29, 2026

Other market indicators point the same way

The latest Cass Transportation Index Report for May 2026 shows a similar pattern. Cass said its Shipments Index was still down 1.2% year over year in May, even after a 3.0% month-over-month increase, while the Expenditures Index rose 7.5% year over year and the Truckload Linehaul Index increased 6.9% year over year to 150.8. Cass also stated plainly that “it is mainly supply constraints supporting higher rates” and that truckload rates are likely to continue moving higher in the coming months. Cass Information Systems, May 2026

Cass’s commentary is particularly useful because it covers the broader for-hire market, not just dry van spot. It also notes that its truckload linehaul measure excludes fuel and accessorial charges, meaning the all-in cost pressure can be higher than the linehaul index alone suggests, especially in refrigerated freight and other lanes where surcharges have been moving up. Cass Information Systems, May 2026

ACT Research has been even more explicit about the supply side. In a June 22 market update, ACT said truckload spot rates are on track to rise more than 40% year over year in June 2026, net fuel, and that “tighter supply remains the main reason for accelerating rates.” ACT added that the freight cycle has so far been supply-driven, with lower equipment investment, a worsening driver-availability picture, and new regulations contributing to faster tightening. ACT Research, June 22, 2026

FTR Transportation Intelligence, cited by Commercial Carrier Journal on June 15, made a similar argument. FTR said spot rates across major truckload equipment types were tracking well above prior years through mid-2026 and projected 2026 spot-rate increases excluding fuel surcharges of about 29.6% for dry van, 30.7% for refrigerated, and 27.8% for flatbed. FTR’s view, according to vice president Avery Vise, was that the strength had “nothing to do with a freight volume boom” and was instead about disruption and tight capacity. Commercial Carrier Journal, June 15, 2026

Why this matters operationally

A fast-rising spot market changes more than transportation invoices. When spot rates accelerate while demand remains only modestly improved, the immediate risk is that unattractive lanes and short-notice moves become harder to cover without paying up. That can show up as weaker routing-guide compliance, more reliance on brokers or secondary carriers, and a wider gap between planned transportation budgets and actual recovery spend.

For industrial freight, that matters most on the moves that are hardest to postpone: plant-side parts recoveries, outage support, maintenance-related replenishment, project cargo support legs, and production freight with fixed delivery windows. If the contract-to-spot spread stays narrow, the cost of a service failure is no longer just a small spot premium. It can become a materially higher all-in move once fuel, detention, layover, after-hours handling, team coverage, or appointment-risk accessorials are layered in.

The budget angle also becomes more serious entering the second half of the year. Fast-rising spot rates usually pull mini-bids and backup pricing higher even before annual contract resets fully catch up. That is especially true when the repricing appears to be carrier-supply-led rather than driven by a short-lived demand spike.

Fuel is still part of the story, but not the whole story

Fuel should not be ignored, even if it is not the main driver of the truckload reset. The U.S. Energy Information Administration said the U.S. average retail on-highway diesel price was $4.668 per gallon for the week of June 29, 2026, down from $4.832 the prior week but still elevated compared with pre-surge levels earlier in the year. That means fuel surcharges can still amplify all-in truckload cost even as linehaul pricing tightens for structural capacity reasons. EIA weekly diesel prices, released June 30, 2026

Cass’s reminder that its linehaul index excludes fuel and accessorials is important here. A shipper looking only at linehaul benchmarks can underestimate the invoice impact once diesel-linked surcharge tables and operating-cost pass-throughs are applied. Cass Information Systems, May 2026

What remains uncertain

The main uncertainty is not whether rates have moved higher; the current data is clear on that point. The question is how durable the upcycle becomes after the July 4 seasonal shift and whether rising rates pull enough owner-operators, small fleets, or parked equipment back into the market to cool the pace.

ACT has already cautioned that the near-vertical trend is unlikely to persist indefinitely, noting some seasonal cooling may follow the holiday period even though driver availability remains tight and new regulations may keep capacity constrained. ACT Research, June 22, 2026

That said, the broad direction across U.S. Bank/DAT, Cass, ACT, and FTR is consistent: the truckload market entering late June 2026 is not just “firming.” It is repricing, and the visible spot-rate jump in May suggests the cost pressure is now large enough to affect procurement strategy, not just market commentary.

The practical takeaway

The most useful way to read the new May data is as a warning about margin of error. When spot rates are up more than 31% year over year in dry van and contract rates are still catching up, the flexibility that buyers counted on during the soft market shrinks quickly. Loads that can be booked earlier are worth booking earlier. Backup carrier options need revalidation at current market levels. Lanes that only work when spot is cheap need another look before Q3 disruptions expose the gap.

For CAP Logistics readers, this is the kind of domestic market shift that can affect maintenance windows, plant recovery freight, and project-support moves long before it shows up in annual transportation budgets. The practical response is not panic buying of capacity, but earlier planning, tighter lane prioritization, and clearer fallback options for freight that cannot miss its delivery window.