NIGP 21072: Risers and Cones, Reinforced Concrete

NIGP 21072 Risers and Cones, Reinforced Concrete, Item code, comprises precast and cast-in-place concrete structural components—manhole risers, eccentric cones, thrust blocks, drainage structures, and related utility infrastructure—that state and local governments procure for water resources, stormwater, and transportation networks. Recent activity shows municipal and county water departments, transportation authorities, and public works divisions soliciting these components through IFBs, ITBs, and RFQs on both as-needed and annual contract vehicles. Issuers span city public works departments (Tampa, Palo Alto, Madison, Santa Cruz, Fairburn), county water resources and transportation divisions (Gwinnett, Santa Clara, Washington, Orange, Broward), and special-purpose authorities (Madison Community Development Authority). Gwinnett County Department of Water Resources appears as a repeat buyer, with multiple 2026 solicitations for manhole sections, rings, covers, steel risers, and stormwater pipe on annual contracts. The work typically includes specification and delivery of precast concrete manhole components (eccentric cones, riser sections, rings, covers, drainage structures), thrust blocks for fire hydrants, reinforced concrete box culverts, sidewalk and pad concrete pour and finishing, and coordination with site preparation and utility installation. Bonding, prevailing wage compliance, and performance bonds at 100 percent of contract value are standard requirements across issuers.

Geographic activity concentrates in California (Santa Cruz, Palo Alto, Santa Clara County), Georgia (Gwinnett County, Fairburn), and Florida (Tampa, Orange County, Broward County), with additional solicitations in Oregon and Wisconsin. Representative recent opportunities include the City of Santa Cruz Fire Department's IFB for concrete pad installation with 18.15 cubic yards of reinforced concrete supporting 55,000-pound fire apparatus, due July 29, 2026; Gwinnett County's annual contract ITB for manhole sections, rings, covers, and precast drainage structures for the Department of Water Resources, due March 5, 2026; and the City of Tampa RFQ for forty precast concrete thrust blocks (8-inch fire hydrant applications) with 42" × 24" × 8" dimensions, due May 5, 2026. Washington County, Oregon's ITB for precast segmental reinforced concrete box culvert on Schmeltzer Road, due May 6, 2026, carried an estimated $200,000 contract value. Gwinnett County's stormwater pipe ITB (Section A: reinforced circular concrete pipe 15" to 72" diameter) and Palo Alto's three-year blanket purchase order for Portland Cement Concrete (not-to-exceed $255,000 total, $85,000 annually) exemplify high-volume annual and multi-year contracting vehicles. Most issuers require three to five years of similar project experience, valid contractor licenses, and E-Verify participation; local and minority business enterprise preferences apply in several jurisdictions.