Congestion Mitigation and Air Quality

Congestion Mitigation and Air Quality Improvement Program

The Congestion Mitigation and Air Quality Improvement Program (CMAQ) is a federal-aid program of the Federal Highway Administration created under the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, continued during the Transportation Equity Act for the 21st Century (TEA-21) and reauthorized by the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) for the years 2005-2009.

SAFETEA-LU amended the CMAQ authorizing statutes to allow minimum apportionment states to use CMAQ funds for CMAQ authorized uses throughout the state rather than just in air quality non-attainment and maintenance areas. SAFETEA-LU also allowed for flexibility of funding between CMAQ and Surface Transportation Program (STP) eligible projects with an emphasis on projects that reduce particulate matter. 

CMAQ is designed to fund transportation projects and programs that contribute to the attainment or maintenance of national ambient air quality standards (NAAQS) for ozone, carbon monoxide and particulate matter.

In Wyoming, three main objectives have been set for CMAQ funds:

  • Maintaining and/or bringing areas  into attainment with the national ambient air quality standards (NAAQS) for ozone, carbon monoxide and particulate matter 

  • Enabling local governments to alleviate the air-quality issues created by energy development and other industrial activity in their vicinities

  • Supplement the STP program throughout the state as determined by the Wyoming Transportation Commission

Application Procedure

WYDOT provides $2 million each year for local governments for CMAQ projects. The application is made available on or around July 1st of each year with a minimum application period of 45 days. 

CMAQ funding provides for a 80 percent federal portion and a 20 percent local match is required. Typically, request for funding far exceed the program allocation and overmatch by the project sponsor is encouraged.

Preference is given to projects in energy and industrial impacted areas designed to mitigate airborne particulate matter. The project application should address the current air-quality conditions and how the proposed project will improve these conditions. Applicants should also address their plans for both pre-project and post-project air-quality monitoring to evaluate the effectiveness of the project.

Other project types may be considered as outlined in the FHWA guidance on a case-by-case basis.

Eligible Recipients and Project Selection

Typically, CMAQ projects are proposed by the affected county government.  The county, or its duly authorized representative, will submit the application that clearly identifies the project boundaries.

Applications are evaluated by the CMAQ Advisory Committee which makes project funding recommendations to the Wyoming Transportation Commission. 

The Wyoming Transportation Commission has the final award authority for projects selected for funding under the CMAQ Program.


The Office of Local Government Coordination at WYDOT is available to answer questions about the program.


Vacant Dave Koskelowski Janelle Leonard
Local Programs  Local Programs  Local Programs 
Coordinator Specialist Specialist
(307) 777-4862 (307) 777-3938 (307) 777-4179

Fax:  (307) 777-4759

Postal Address:
Wyoming Department of Transportation
Attention:  Office of Local Government Coordination
5300 Bishop Boulevard
Cheyenne, WY 82009


FY 2019 Application Information