There are several resources online that provide information on IIJA grant funding opportunities. Following are some suggested sites to visit:

Implementing Infrastructure Investments at the County Level | National Association of Counties

A resource for counties, includes information such as:

• Open notices of funding for county governments
• IIJA funding matrix for counties

Tracking Competitive Grants in IIJA | Bipartisan Policy Center

A table of major competitive grants with information on who is eligible.