Installation of new 240'x12" tile at US-30 (MM160.37 & STA 2234+90) in Story County

The Iowa DOT is soliciting competitive bids to supply all labor, materials, and equipment needed to install a new 240‑ft × 12‑in underground tile crossing beneath U.S. 30 at mile‑marker 160.37 / station 2234+90 in Story County. The contractor must provide the tile, perform installation, handle traffic‑control (TC‑1 plan), and restore the right‑of‑way. No lane closures are anticipated, and the work must be completed by the requested delivery date of 15 Dec 2026. The project follows DOT RFB 3163 specifications and is subject to Iowa Administrative Code 761‑20, with required performance and payment bonds for contracts ≥ $25,000 and compliance with Build‑America/Buy‑America rules. • Supply and install 240‑ft × 12‑in steel‑cased tile under US‑30. • Provide all labor, equipment, and traffic‑control (TC‑1) as per specifications. • Deliver completed work by 15 Dec 2026, with all inspections and as‑built documentation. • Contractor must be registered with Iowa Division of Labor, provide performance/payment bond, and meet insurance requirements.