National Culvert Removal, Replacement, and Restoration (Culvert Aquatic Organism Passage)

The purpose of the Culvert AOP Competitive Grant Program is to provide funding to eligible entities for the replacement, removal, and repair of culverts or weirs that meaningfully improve or restore fish passage for anadromous fish. Anadromous fish are born in freshwater and spend most of their lives in saltwater, returning to freshwater to spawn. Salmon are a well-known example of anadromous fish. Eligibility: Eligible applicants under the Culvert AOP Competitive Grant Program are: States Units of local government Indian Tribes Projects eligible for funding are projects for the replacement, removal, or repair of culverts or weirs that: (1) would meaningfully improve or restore fish passage for anadromous fish; and (2) with respect to weirs, may include (A) infrastructure to facilitate fish passage around or over the weir; and (B) weir improvements (49 United States Code (U.S.C.) § 6703(b)). Opportunity number: FHWA-CAOP-23-001. Closing date: 2026-07-16. Funding: up to USD 800,000,000; floor 0; 50 expected awards.

Eligible applicants under the Culvert AOP Competitive Grant Program are: States Units of local government Indian Tribes Projects eligible for funding are projects for the replacement, removal, or repair of culverts or weirs that: (1) would meaningfully improve or restore fish passage for anadromous fish; and (2) with respect to weirs, may include (A) infrastructure to facilitate fish passage around or over the weir; and (B) weir improvements (49 United States Code (U.S.C.) § 6703(b)).

Environment and Natural Resources

United States

Official opportunity number: FHWA-CAOP-23-001.

up to USD 800,000,000; floor 0; 50 expected awards

Closes 2026-07-16: Closes 2026-07-16: Jul 16, 2026.

Confirm the exact deadline time, time zone, and submission route on the official call page.

Plan internal approvals, partner confirmations, budgets, letters, and portal submission before the final deadline.

Use the official Grants.gov listing for application package, forms, attachments, and agency-specific instructions. Submit by 2026-07-16 unless the agency updates the official listing.

Before submitting, check required documents, eligible costs, attachments, page limits, institutional approvals, and whether the opportunity uses an expression of interest, full proposal, registration, or nomination stage.