Iowa Clean Air Attainment Program (ICAAP) supports Iowa communities and transportation agencies with projects that reduce vehicle emissions, ease congestion, and help meet national air-quality standards.
Funder: Iowa Department of Transportation
Due Dates (Anticipated): October 2027 (Application deadline)
Funding Amounts: $4 million annually; reimbursement up to 80% of eligible costs, or 50% for for-profit partnerships; $20,000 minimum project cost
Summary: ICAAP funds Iowa transportation projects and programs that reduce vehicle emissions, traffic congestion, and single-occupant vehicle travel.
Key Information: Sponsors must pay all costs upfront; private applicants need a public co-sponsor assuming fiscal responsibility.
The Iowa Clean Air Attainment Program (ICAAP), administered by the Iowa Department of Transportation, awards federal Congestion Mitigation and Air Quality Improvement funds through a statewide competition. It supports transportation projects and programs that help Iowa attain or maintain National Ambient Air Quality Standards, focusing on volatile organic compounds, nitrogen oxides, carbon monoxide, and, under certain conditions, particulate matter.
The program prioritizes feasible, cost-effective projects with the highest potential to reduce transportation-related congestion and air pollution. Supported work includes traffic-flow improvements, public transit expansion, travel-demand management, bicycle and pedestrian facilities, intermodal freight improvements, and publicly owned alternative-fuel vehicles. Applicants must quantify expected emissions benefits. Projects in areas with greater transportation-related air pollution or congestion receive higher priority.