US Asphalt Prices Climb for a Sixth Straight Month as Refining Costs and Paving Season Converge

A Sixth Consecutive Month of Gains

US liquid asphalt binder prices have risen every month since January 2026, and the pace has been faster than the typical spring paving-season run-up. New monthly benchmarking from Epignosis Insights, a market research and brand intelligence consultancy, puts the Epignosis Insights National Asphalt Binder Composite at an estimated $698 per ton for September 2026 — up roughly 30% from $538 per ton at the start of the year.
The Epignosis Insights US Asphalt Price Tracker, which benchmarks monthly liquid binder and finished hot-mix asphalt (HMA) pricing across US regions, traces the increase to a convergence of refinery feedstock costs, tightening heavy-crude allocation, and construction-season demand that hit simultaneously in the second quarter — a combination sharper and earlier than in most recent years.

What the Monthly Numbers Show

State transportation department data confirm the pattern at the regional level. Oklahoma's Tulsa/Southern Kansas benchmark, one of the most widely cited Midwest/Mid-Continent reference prices for PG 64-22 binder, held at $495 per ton in March and April before jumping to $572.50 in May — a 15.7% single-month increase. Vermont's statewide index moved even further, from $638 per ton in March to $793 per ton by June, a 24.3% three-month gain. Maryland's asphalt trade index posted a prevailing price of $807.50 per ton for September, the highest reading among the three state benchmarks in this report.

Finished hot-mix asphalt (HMA), which blends binder with aggregate and therefore moves less sharply, is estimated to have risen from $112 to $128 per ton at the plant gate over the same window — consistent with independent industry benchmarking that places 2026 national HMA pricing in the $115–125 per ton range.

BLS Data Confirms This Isn't a Typical Seasonal Spike

The US Bureau of Labor Statistics' producer price index for asphalt paving mixtures and blocks (series WPU139401) reached 431.026 in July 2026, up 6.6% over the prior year and up 34.4% over five years — a pace well ahead of headline inflation. That structural trend, rather than the seasonal overlay alone, is why this report's outlook does not expect a full retracement to prior-year pricing even once the fourth-quarter paving slowdown arrives.

Three Forces Behind the Run-Up

The tracker attributes the increase to three overlapping forces. First, asphalt is a byproduct of the heavier vacuum-residue fraction of crude oil refining, so feedstock costs and crude slate decisions flow through to binder pricing within roughly 30 to 60 days. Second, refiners prioritize higher-margin light products over asphalt when those margins improve, which can tighten asphalt supply even when overall crude supply is adequate. Third, construction-season demand, concentrated in the April-through-October paving window across most of the US, adds a predictable seasonal overlay — which is why nearly every state DOT index in the tracker's panel shows its steepest gains between April and June.

A Producer's View: HF Sinclair's 2026 Disclosures

HF Sinclair's 2026 investor disclosures offer a producer-side confirmation. The company's Refining segment includes HF Sinclair Asphalt Company LLC, operating terminals across Arizona, New Mexico and Oklahoma, and management highlighted its retail asphalt and heavy-oil value chain as a contributor to improved margin capture in both Q1 and Q2 2026 earnings calls — tying the business explicitly to the company's ability to run heavier crude slates profitably, which is consistent with this report's driver analysis.

What Buyers Should Watch Next

The tracker's near-term outlook points to a seasonal plateau or modest pullback into the fourth quarter as paving season winds down in most northern and midwestern states. However, given the BLS PPI's structural one- and five-year gains, state DOTs and contractors locking in 2027 paving contracts are advised to treat current elevated pricing as the likely floor for next year's spring season rather than a temporary peak.

Producer Margins Are Already Reflecting the Trend

The pricing signal shows up on the corporate side too. HF Sinclair's Refining segment, which includes HF Sinclair Asphalt Company LLC operating terminals across Arizona, New Mexico and Oklahoma, saw management highlight retail asphalt and heavy-oil value chain contributions to margin in both Q1 and Q2 2026 earnings calls. For a company that can flex crude slate toward heavier, more asphalt-yielding grades, that framing is a direct read on how tightening binder economics are showing up in refiner profitability well before it reaches a state DOT bid tabulation.

About the Tracker

The Epignosis Insights US Asphalt Price Tracker is a monthly benchmarking report covering national liquid binder and hot-mix asphalt pricing, compiled from a national composite benchmarked against a panel of state DOT asphalt price indices and industry reporting, cross-checked against publicly disclosed data from the US Bureau of Labor Statistics, NAPA, HF Sinclair's public disclosures, and Engineering News-Record. The full report for September 2026, including the monthly pricing table and regional comparison, is available from Epignosis Insights.