# SAM #140F1S26Q0143

Procurement of Precast Reinforced Box Culvert Supplies for Union Slough NWR Water Control Structure Replacement

**Buyer:** USFWS IT Services
**Posted:** September 15, 2026
**Respond By:** September 21, 2026
**Identifier:** 140F1S26Q0143
**NAICS:** 327390, 423840, 327331, 423390

The U.S. Fish and Wildlife Service is procuring precast reinforced box culvert supplies for a water control structure replacement at Union Slough National Wildlife Refuge, Middle Dike, Kossuth County, Iowa.
- Government Buyer:
  - Department of the Interior, U.S. Fish and Wildlife Service, Union Slough National Wildlife Refuge, FWS IT Services
- Products Requested:
  - 24 linear feet of precast 6' x 4' reinforced box culverts (per Iowa DOT standards and attached plans)
  - 2 precast reinforced custom type 1 box culvert end sections with stoplog channels
    - Includes fabrication of stoplog channels, embeds, and installation of SECO #990010' - 4' water level gauge or approved equal
- OEMs and Vendors:
  - No specific OEMs or vendors are named; SECO is referenced for the water level gauge
- Notable Requirements:
  - All culvert supplies must meet Iowa DOT standards
  - Custom end sections must include stoplog channels and water level gauge installation
  - Delivery required by May 1, 2027
  - Firm-fixed price contract, evaluated on Lowest Price Technically Acceptable basis

### Description

FWS UNION SLOUGH NWR - CULVERT SUPPLIES

[View original listing](https://sam.gov/opp/0538fde9e0734ef588b7a315a360cdab/view)