UNSPSC 30111800: Aggregates

Inert granular materials that are combined and solidified with cement and water to make mortar or concrete. Composed of sand, gravel, crushed stone and others.

UNSPSC 30111800 Aggregates is a Class code that encompasses the supply and delivery of bulk stone, sand, gravel, and specialty aggregate materials for highway construction, maintenance, and infrastructure projects. State and local governments procure this commodity as FOB-destination materials in high volumes—typically thousands of tons per contract—delivered to maintenance facilities, project sites, and stockpile locations. Recent solicitations show demand for specification-grade materials including crushed stone (trap rock, crusher fine), natural and manufactured sand, recycled concrete and asphalt, cover chips, riprap, and lightweight aggregates such as haydite. Issuing bodies span state departments of transportation (MoDOT districts, UDOT, ODOT, Caltrans), counties (Santa Clara, Ada, Barrow), cities (Detroit, Salem, Sioux Falls, South Jordan), regional purchasing cooperatives (Berkshire Regional Group Purchasing Program in Massachusetts), and special-purpose agencies (Boulder County Parks and Open Space). MoDOT's Kansas City and Northwest districts appear as repeat buyers posting multiple seasonal contracts for fall and winter materials. Most contracts are awarded on a line-item basis to the lowest responsive bidder, with payment terms of Net 45 days and delivery schedules requiring minimum daily tonnages (often 250–500 tons). Buy American Act preferences (10 percent price advantage for domestic products) apply to many MoDOT solicitations; MBE, WBE, and service-disabled veteran preferences are common but not universal across jurisdictions.

Recent activity clusters in the Midwest (Missouri districts, Utah, Idaho) and Northeast (Massachusetts, Connecticut, New York), with additional California and Oregon solicitations. The Missouri Department of Transportation's Northeast District posted back-to-back IFBs for Spec TR Trap Rock (10,775 tons due February 12, 2026) and Spec 6A Sand (11,100 tons due February 10, 2026), both line-item awards to lowest-bidder suppliers. The MoDOT Kansas City District's fall aggregate solicitation (UNSPSC tagged) requested approximately 10,050 tons across three specification categories with a July 31, 2026 response date and American-made preference plus MBE/WBE participation tracking. UDOT issued multiple cover-material IFBs (Region 1, Region 3) for 12,255 tons and 1,500 tons respectively with May 2026 delivery windows. The Oregon Department of Transportation's Brooks Quarry procurement (April 23, 2026 deadline) sought 10,000 cubic yards of sanding rock for winter traction. The Berkshire Regional Group Purchasing Program's FY27 cooperative solicitation, closing April 2, 2026, bundles aggregates and loam alongside seasonal products for 32 Massachusetts municipalities with MassDOT pre-qualification and prevailing wage requirements for service components. Geographic concentration reflects highway maintenance and seasonal stockpiling cycles; no single jurisdiction dominates, and competitive dynamics favor regional suppliers with reliable delivery logistics and spec-compliant inventory.