UNSPSC 72141201: Caisson drilling service

The building of caissons owned by others

UNSPSC 72141201 Caisson drilling service is a Commodity code describing specialized drilling services for subsurface investigation, geotechnical testing, and utility infrastructure installation that state and local governments procure for site characterization, foundation analysis, and bore-under projects. Recent solicitations show state and local buyers using this code for geotechnical probe work, monitoring well installation, directional boring under obstacles, and geothermal test bore drilling rather than traditional caisson sinking—the work centers on advancing boreholes, sampling soil and rock, installing instrumentation, and completing underground utility crossings.

Activity spans transportation departments, counties, cities, water utilities, school districts, and regional authorities across multiple states. The Oregon Department of Transportation leads recent volume with successive bids for phased geotechnical investigations near Wickiup Junction (seismic cone penetration testing and drilling with sampling under ITBs S-73000-00018071, S-73000-00018072, and S-73000-00017636, all September–October 2026) and coastal landslide drilling under ITB S-73000-00017948 (bids due October 13, 2026). Escambia County, Florida solicited monitoring well installation at Klondike Landfill (ITQ 2627MWKLONDIKE, responses due September 16, 2026, deadline passed); the Greenwood Metropolitan District, South Carolina requested railroad boring services on Briarwood Road (ITB 2026RFB008, bids due October 27, 2026). Colorado, Florida, Georgia, Connecticut, and Wisconsin jurisdictions issued drilling requests ranging from geothermal test bores at Monona Terrace (Madison, bids due August 24, 2026) and West Rocks Middle School (Norwalk, bids due September 10, 2026) to utility bore work under taxiways (Draughon-Miller Airport, Bell County, Texas, bids due August 5, 2026) and stock water well drilling (Boulder County Parks and Open Space, RFP-300-26, proposals due September 4, 2026). The code sees primary recent activity in the Mountain West and Southeast, with scattered Pacific Northwest federal-funded research projects and Florida utility and environmental work.