NIGP 89031: Manhole Risers, Steel Expandable

NIGP 89031 Manhole Risers, Steel Expandable is an Item code covering precast or fabricated steel riser rings and adjustable manhole risers used to raise or modify the height of existing sanitary sewer and water utility access points. State and local governments procure these components for infrastructure maintenance, replacement, and extension work—particularly in wastewater and water main rehabilitation programs. Recent solicitations show cities and utilities buying both standardized riser rings in multiple diameters and brand-specific adjustable risers in stainless steel, typically in quantities ranging from 100 units to several hundred as line items within larger sewer and water main replacement or repair contracts. The buyer mix spans municipal water utilities (City of Houston, City of Dallas Water Utilities), county sanitation districts (Sanitation District No. 2-3 in Santa Clara County), and state procurement offices (Ohio state agency, State of Texas), along with standalone component buys embedded in broader infrastructure rehabilitation projects.

Recent activity concentrates in Texas and California, with scattered solicitations in Ohio, Florida, and Georgia. The City of Houston has posted multiple riser solicitations since June 2026—including 100 units of EJCO Type 5 Steel Manhole Risers (EJCO part M5320015104A, due August 27, 2026), 100 stainless steel expandable risers adjustable 23"–23.5" (due August 21, 2026), and adjustable risers 23"–23.5" x 1.5" (due June 10, 2026)—indicating recurring municipal need. An Ohio state agency posted a brief riser ring bid (four product lines in 3/4" diameter with varying rise heights and 2" lids, due September 3, 2026). Sanitation District No. 2-3 in Santa Clara County requested concrete sanitary sewer manholes and related fittings within its Structural Defect Repair Project Phase 2 (due September 17, 2026), and the City of Dallas embedded water meter and manhole lid adjustments in its 2026 Bond Residential Sidewalk Replacement Program Region 3A, estimated at $2.2 million (due November 10, 2026). Most opportunities are informal bids or ITBs with tight turnarounds—typically five to fourteen days—and brand-specific or part-number specifications limiting competition to named manufacturers such as EJCO and WesTech Engineering.