Systems Planning

Iowa Clean Air Attainment Program (ICAAP)

Program manager

Jared Smith
Phone: 515-239-1713

7/27/2023 NOTICE: The Iowa DOT is now accepting applications for the annual Iowa Clean Air Attainment Program funding cycle. Applications shall be emailed to no later than 5 p.m. Oct. 1, 2023.

Statewide ICAAP Application Summary

FFY 2024 approved projects and awarded funding amounts
FFY 2023 approved projects and awarded funding amounts
FFY 2022 approved projects and awarded funding amounts
FFY 2021 approved projects and awarded funding amounts
FFY 2020 approved projects and awarded funding amounts
FFY 2019 approved projects and awarded funding amounts
FFY 2018 approved projects and awarded funding amounts
FFY 2017 approved projects and awarded funding amounts
FFY 2016 approved projects and awarded funding amounts
FFY 2015 approved projects and awarded funding amounts
FFY 2014 approved projects and awarded funding amounts

Iowa Clean Air Attainment Program (ICAAP)

Fixing America’s Surface Transportation Act (FAST Act), the current Federal Transportation Reauthorization Act, continued the Congestion Mitigation Air Quality Improvement (CMAQ) program to provide a flexible funding source to State and local governments for transportation projects and programs to help meet the requirements of the Clean Air Act. Funding is available to reduce congestion and improve air quality for areas that do not meet the National Ambient Air Quality Standards for ozone, carbon monoxide, or particulate matter (nonattainment areas) and for former nonattainment areas that are now in compliance (maintenance areas).

Indicative of the Congressional intent for creating the CMAQ Program, the Iowa DOT Commission established ICAAP in 1995. Iowa DOT administers the ICAAP on a statewide competitive application basis and awards federal funds to projects with the highest potential for reducing transportation-related congestion and air pollution. Project applications may be submitted by cities, counties, public transit agencies, and state and federal agencies. Private nonprofit organizations and individuals who want to apply for funding must have a public agency as a co-sponsor.

Proposed projects are evaluated and ranked by a project evaluation committee comprising representatives from the Iowa DOT's Systems Planning Bureau, Iowa Department of Natural Resources, Iowa Public Transit Authority, MPOs, and RPAs. The Iowa DOT Commission has final project selection authority. Under FAST Act, Iowa DOT earmarked and administers $4.0 million of CMAQ funds annually for ICAAP.


Application and Instruction for ICAAP Funding
ICAAP Application Handbook – July 2022
Instructional Memorandums and the Federal-aid Project Development Guide for Local Public Agencies – Office of Local Systems
ICAAP Project Reimbursement Form
ICAAP-SWAP Project Reimbursement Form

Attention icon

Reimbursement claims must be accompanied by an original signed reimbursement claim form, copies of all invoices, listing the beginning and end of the invoice billing period, pay estimates, and proof of payment totaling 100% of actual costs for which the reimbursement is being requested. Further instructions on supporting documentation can be found in the Required Documentation for Reimbursement document. Claims, including required documentation, shall be emailed to


The following fillable forms require Adobe Reader. Chrome, Firefox, and Safari browsers, by default, have their own pdf readers enabled, even if you have Adobe Reader installed on your computer. If using those browsers, you will need to download the pdf file to your computer and view the form in Adobe Reader or you can use Internet Explorer. Here are instructions for saving your file and opening it in Adobe Reader:

  1. Right click on the form link and select "Save link as...".
  2. Choose a location on your computer and click "Save."
  3. Open Adobe Reader.
  4. Go to File>Open and select the file you just saved. It will open the form in Adobe Reader.


MOBILE 6.2 – Calculates the current and future inventories on emissions of hydrocarbons, oxides of nitrogen and carbon monoxide from passenger cars, motorcycles, light- and heavy-duty trucks at the local, state and national level.


Login  |  ©  Iowa Department of Transportation.  All rights reserved.