The Bureau of Labor Statistics released its May 2026 Producer Price Index on June 12. Among the construction-relevant data points analyzed by AGC chief economist Ken Simonson in the June 8-12 Data DIGest: the diesel fuel PPI soared 20% in May and 106% year-over-year, which contributed to increases in the index for truck transportation of freight of 3.4% and 17%, respectively. The BLS Producer Price Index release for May 2026 is the primary source (Source: BLS PPI May 2026, bls.gov, June 12, 2026).
Before going further, the PPI number requires context. The producer price index measures prices at the wholesale and producer level — what fuel distributors and transportation companies pay — rather than retail prices at the pump. The 106% year-over-year PPI increase for diesel does not mean retail diesel prices are 106% higher than a year ago. Retail diesel nationally was approximately $3.582 per gallon a year ago, per AAA historical data. The week of June 8, retail confirmed at $5.21 per gallon, a 45% increase year-over-year at the retail level. The PPI increase is larger because wholesale prices moved more dramatically and faster than retail prices during the supply disruption period.
“The diesel fuel PPI soared 20% in May and 106% year-over-year, which contributed to increases in the index for truck transportation of freight of 3.4% and 17%, respectively. PPIs for three key metals used in construction continued to post outsized increases driven by tariffs.”
Source: AGC Data DIGest, citing BLS Producer Price Index May 2026 · constructioncitizen.com · June 12, 2026
What the 106% PPI figure captures that retail prices do not is the full pressure on trucking operators and haulers at the wholesale level. Owner-operators and small carriers who buy diesel in bulk or through fleet accounts pay prices closer to the wholesale PPI than to retail pump prices. When the diesel fuel PPI increases 106% year-over-year, that is the environment every company running a dump truck or end dump has been operating in since spring. It explains why surcharges have been aggressive, why some small operators parked equipment, and why delivered road base and aggregate costs have moved significantly beyond what the retail pump price alone would suggest.
For contractors pricing Texas jobs right now, the PPI data provides context for a question that has come up in every Q2 and Q3 budget conversation: why is delivered material more expensive than I expected? The answer is in the BLS tables. Getting a current delivered quote gives you a number that reflects where the PPI is today rather than where it was when the original budget was set.
The diesel fuel PPI rose 106% year-over-year in May per BLS data. That is the magnitude of the cost pressure the trucking industry absorbed this spring. A current delivered aggregate quote gives you a price that reflects where that pressure has settled, not where it was when your project budget was built.