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"Culvert Aquatic Organism Passage (AOP) Program" is currently closed and not accepting applications.
Culvert Aquatic Organism Passage (AOP) Program is sponsored by U.S. Department of Transportation, Federal Highway Administration. Supports projects that improve aquatic organism passage through culverts.
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Federal Highway Administration U.S. Department of Transportation Federal Highway Administration 1200 New Jersey Avenue, SE Aquatic Organism Passage (AOP) On June 2, 2026, FHWA announced the availability of up to $800M for FY2023 through FY2026 Culvert AOP grants as part of the FY23-26 Culvert AOP NOFO. The deadline to apply for FY23 through FY26 funding via Grants. gov is Thursday, July 16, 2026, at 11:59 p.
m. , EDT. Where transportation systems such as roads and tracks intersect waterways, a result may create barriers that impede the passage and impair the habitat of aquatic organisms and other wildlife.
The Federal Highway Administration (FHWA), an agency within the U.S. Department of Transportation (USDOT), promotes approaches to reduce or remove barriers to passage of both aquatic and wildlife species where they interact with our Nation’s transportation system. The FHWA also recognizes that removing these barriers may have flood risk reduction, environmental, cultural, and societal benefits.
Aquatic organism populations may be critical to local economies and Native and Tribal communities. The FHWA is working to advance the state of water crossing design practice for aquatic organism passage (AOP). Through these advances, the FHWA seeks to encourage practices that minimize negative effects on fish and other aquatic organism populations while creating safer and more resilient structures.
The three links below provide some background (“ What is AOP ”), information on AOP Grants (“ Grants ”) and a variety of resources related to both aquatic organism passage and related topics (“ Resources ”). Click on any of the icons to proceed to a specific topic.
According to the current listing, eligibility includes: State and federal lands management agencies, metropolitan planning organizations, local and tribal governments. Confirm the full requirements in the official notice before applying.
The current listing shows up to $800 million for FY2023 through FY2026. Verify award ceilings, matching requirements, and allowable costs in the official notice.
The published deadline was July 16, 2026, which has passed. Check the official notice for any future application windows before investing time in a proposal.
Culvert Aquatic Organism Passage (AOP) Program is funded by U.S. Department of Transportation, Federal Highway Administration. Verify program details on the funder's official page before applying.
Start from the official opportunity page linked in this listing — it carries the sponsor's submission instructions.
The National Fish Passage Program (NFPP) provides technical and financial assistance to partners to remove instream barriers and restore aquatic connectivity, improve community safety, and support local economies. Fish passage projects benefit communities by reducing flood risk, improving recreational opportunities, and improving roads while supporting native fish populations and aquatic ecosystems. NFPP project examples include obsolete and dangerous infrastructure removals, culvert replacements, floodplain restoration, and the installation of fishways. It is estimated that for every $1 million invested by the program, $1.5 million in value is added to the economy.The program is delivered through U.S. Fish and Wildlife Service (Service) field offices nationwide. Local Service staff work with partners to identify and implement projects. Projects are based on sound science, advance the Service mission, and promote aquatic connectivity. Contact a regional NFPP Coordinator in your area for information about program priorities and the application process.The Commerce, Justice, Science; Energy and Water Development; and Interior and Environment Appropriations Act, 2026, allocated $15 million for the National Fish Passage Program, of which $5 million is designated for implementing the Fisheries Restoration and Irrigation Mitigation Act (FRIMA) (Public Law 106-502) of 2000. Funding Opportunity Number: F26AS00105. Assistance Listing: 15.685. Funding Instrument: CA,G. Category: ENV. Award Amount: $1 – $1M per award.
National Fish Passage Program is sponsored by U.S. Department of the Interior (DOI), U.S. Fish and Wildlife Service (USFWS). While not a traditional grant program, the National Fish Passage Program is a cooperative conservation program that provides funding and direct technical assistance to restore rivers and conserve aquatic resources by removing or bypassing barriers, including culverts.
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