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District Department of Transportation

Congestion Mitigation and Air Quality Improvement Program (CMAQ)

The Congestion Mitigation and Air Quality Improvement (CMAQ) program provides a flexible funding source for State and local governments to fund transportation projects and programs to help meet the requirements of the Clean Air Act (CAA) and its amendments. The legislation is codified at 23 USC Sec 149. CMAQ money supports transportation projects that reduce mobile source emissions in areas designated by the U.S. Environmental Protection Agency (EPA) to be in nonattainment or maintenance of the national ambient air quality standards. Since its beginning in 1992, the CMAQ program has provided more than $30 billion for over 29,000 transportation-related emission reduction projects for State transportation departments (DOTs), metropolitan planning organizations (MPOs), and other sponsors across the country. 

Funding Requirements 

CMAQ funds must be invested in a State's nonattainment or maintenance areas on projects that reduce ozone (O3) precursors - volatile organic compounds (VOCs) and nitrogen oxides (NOx) - carbon monoxide (CO), or particulate matter (both PM10 and PM2.5) and the applicable precursors from transportation sources. 

A State without a nonattainment or maintenance area may use its CMAQ funds for projects eligible under CMAQ or the Surface Transportation Program (STP). For a list of nonattainment and maintenance areas, see www.epa.gov/airquality/greenbook. 

All CMAQ projects must come from a transportation plan and Transportation Improvement Program (TIP). 

Current CMAQ Funded Projects

Metropolitan Branch Trail - Ft. Totten 

This project will provide a 6.25-mile bicycle-pedestrian trail from Union Station north to the District line along the railroad right of way. This trail will connect at the District line with a route continuing into Silver Spring, MD. It is intended to serve both recreational users and commuters to meet Transportation Control Measures (TCMs) and air quality objectives. Picture 

Capital Bikeshare Marketing and Outreach 

Marketing and outreach to support the Capital Bikeshare program and increase the membership base, particularly in underserved areas. Picture 

District TDM (goDCgo)

Clean Air Partners 

Clean Air Partners strives to improve public health and the environment by working with businesses, organizations, and individuals throughout the region to raise awareness and reduce air pollution through voluntary actions. The purpose of Clean Air Partners is to educate the public about congestion and transportation-related air pollution with specific actions and commute alternatives to reduce existing air quality problems. https://dcgovict-my.sharepoint.com/personal/ecross_ddot_dc_gov/Documents/Sustainability%20Website%20Update/Update%20Pictures/qSA9B0rf_400x400.jpg 

For more information: Clean Air Partners 

Long Bridge Pedestrian & Bicycle Connection 

The Long Bridge Project will construct a new bike-pedestrian bridge as part of the mitigation of National Park Service (NPS) parkland and will span the Potomac River and George Washington Memorial Parkway, connecting Long Bridge Park directly to East and West Potomac Parks. 

Commuter Connections 

Provide support to the District's transportation planning activities, including regional planning, safety, traffic, and infrastructure. Picture 

Circulator Optimus B100 Pilot Project